We Keep Coding

element.getBoundingClientRect constantly returning the initial value

I've got a div with text that follows the cursor (setting its transform:translate in the mousemove event).
One more thing it does, is setting the maxWidth accordingly if the popup would go past the viewport's right border - the text div gets thinner, but higher.
While the above works well, for whatev reason div.getBoundingClientRect refuses to report the text div's height after the max-width has been applied - it constantly returns the initial value. This problem occurs only within the script, though. Should I query it from the console, the proper (updated) height is returned. Why is that so?
const div = document.querySelector("#div");
const p = document.querySelector("#p");
document.addEventListener("mousemove", e => {
div.style.maxWidth = "400px";
div.style.transform = `translate(${e.pageX}px, ${e.pageY}px)`;
const bRect = div.getBoundingClientRect();
p.innerHTML = bRect.height;
if (document.documentElement.clientWidth < bRect.right) {
div.style.maxWidth = document.documentElement.clientWidth - e.pageX + "px";
}
;
});
#div {
max-width: 400px;
display: grid;
place-items: center;
outline: 1px solid black;
position: absolute;
pointer-events: none;
word-break: break-all;
}
html,
body {
height: 100%;
margin: 0;
padding: 0;
overflow: auto;
}
<p id="p"></p>
<div id="div">
Here is some text.Here is some text.Here is some text.Here is some text.Here is some text.Here is some text.
</div>
Please simply move your cursor towards the right border.

In your code you are changing the div's max width after the BoundingClientRect is already calculated. So it first outputs the initial value and only then changes the max width and hence the height.
const bRect = div.getBoundingClientRect();
p.innerHTML = bRect.height;
if (document.documentElement.clientWidth < bRect.right) {
div.style.maxWidth = document.documentElement.clientWidth - e.pageX + "px";
}
If you want to print the height after the div was resized, you have to call getBoundingClientRect again:
const div = document.querySelector("#div");
const p = document.querySelector("#p");
document.addEventListener("mousemove", e => {
div.style.maxWidth = "400px";
div.style.transform = `translate(${e.pageX}px, ${e.pageY}px)`;
const bRect = div.getBoundingClientRect();
if (document.documentElement.clientWidth < bRect.right) {
div.style.maxWidth = document.documentElement.clientWidth - e.pageX + "px";
}
p.innerHTML = div.getBoundingClientRect().height;
});
#div {
max-width: 400px;
display: grid;
place-items: center;
outline: 1px solid black;
position: absolute;
pointer-events: none;
word-break: break-all;
}
html,
body {
height: 100%;
margin: 0;
padding: 0;
overflow: auto;
}
<p id="p"></p>
<div id="div">
Here is some text.Here is some text.Here is some text.Here is some text.Here
is some text.Here is some text.
</div>

Adapt vanilla js carousel to ie

I'm building a website that uses a carousel like this one:
https://codepen.io/queflojera/pen/RwwLbEY?editors=1010
It works perfectly on opera, chrome, edge but it stops working on ie and I need it to work on ie as well, if anyone knows any way around I'll really appreciate it.
//I'm not pretty sure what is causing the ie failure on this code
// Select the carousel you'll need to manipulate and the buttons you'll add events to
const carousel = document.querySelector("[data-target='carousel']");
const card = carousel.querySelector("[data-target='card']");
const leftButton = document.querySelector("[data-action='slideLeft']");
const rightButton = document.querySelector("[data-action='slideRight']");
// Prepare to limit the direction in which the carousel can slide,
// and to control how much the carousel advances by each time.
// In order to slide the carousel so that only three cards are perfectly visible each time,
// you need to know the carousel width, and the margin placed on a given card in the carousel
const carouselWidth = carousel.offsetWidth;
const cardStyle = card.currentStyle || window.getComputedStyle(card)
const cardMarginRight = Number(cardStyle.marginRight.match(/\d+/g)[0]);
// Count the number of total cards you have
const cardCount = carousel.querySelectorAll("[data-target='card']").length;
// Define an offset property to dynamically update by clicking the button controls
// as well as a maxX property so the carousel knows when to stop at the upper limit
let offset = 0;
const maxX = -((cardCount) * carouselWidth +
(cardMarginRight * cardCount) -
carouselWidth - cardMarginRight);
// Add the click events
leftButton.addEventListener("click", function() {
if (offset !== 0) {
offset += carouselWidth + cardMarginRight;
carousel.style.transform = `translateX(${offset}px)`;
}
})
rightButton.addEventListener("click", function() {
if (offset !== maxX) {
offset -= carouselWidth + cardMarginRight;
carousel.style.transform = `translateX(${offset}px)`;
}
})
.wrapper {
height: 200px;
width: 632px;
position: relative;
overflow: hidden;
margin: 0 auto;
}
.button-wrapper {
width: 100%;
height: 100%;
display: flex;
justify-content: space-between;
align-items: center;
position: absolute;
}
.carousel {
margin: 0;
padding: 0;
list-style: none;
width: 100%;
display: flex;
position: absolute;
left: 0;
transition: all .5s ease;
}
.card {
background: black;
min-width: 632px;
height: 200px;
display: inline-block;
}
.card:nth-child(odd) {
background-color: blue;
}
.card:nth-child(even) {
background-color: red;
}
<div class="wrapper">
<ul class="carousel" data-target="carousel">
<li class="card" data-target="card">1</li>
<li class="card" data-target="card">2</li>
<li class="card" data-target="card">3</li>
<li class="card" data-target="card">4</li>
<li class="card" data-target="card">5</li>
<li class="card" data-target="card">6</li>
<li class="card" data-target="card">7</li>
<li class="card" data-target="card">8</li>
<li class="card" data-target="card">9</li>
</ul>
<div class="button-wrapper">
<button data-action="slideLeft">L</button>
<button data-action="slideRight">R</button>
</div>
</div>

Invalid character
carousel.style.transform = `translateX(${offset}px)`;
IE does not support template literals (backticks)
To fix use
carousel.style.transform = "translateX("+offset+"px)";
Also getting
Unable to get property '0' of undefined or null reference
because it is auto in IE
const cardMarginRight = Number(cardStyle.marginRight.match(/\d+/g)[0]);
Fix:
const marginRight = cardStyle.marginRight;
const cardMarginRight = isNaN(parseInt(marginRight)) ? 0 : Number(cardStyle.marginRight.match(/\d+/g)[0]);
//I'm not pretty sure what is causing the ie failure on this code
// Select the carousel you'll need to manipulate and the buttons you'll add events to
const carousel = document.querySelector("[data-target='carousel']");
const card = carousel.querySelector("[data-target='card']");
const leftButton = document.querySelector("[data-action='slideLeft']");
const rightButton = document.querySelector("[data-action='slideRight']");
// Prepare to limit the direction in which the carousel can slide,
// and to control how much the carousel advances by each time.
// In order to slide the carousel so that only three cards are perfectly visible each time,
// you need to know the carousel width, and the margin placed on a given card in the carousel
const carouselWidth = carousel.offsetWidth;
const cardStyle = card.currentStyle || window.getComputedStyle(card)
const marginRight = cardStyle.marginRight;
const cardMarginRight = isNaN(parseInt(marginRight)) ? 0 : Number(cardStyle.marginRight.match(/\d+/g)[0]);
// Count the number of total cards you have
const cardCount = carousel.querySelectorAll("[data-target='card']").length;
// Define an offset property to dynamically update by clicking the button controls
// as well as a maxX property so the carousel knows when to stop at the upper limit
let offset = 0;
const maxX = -((cardCount) * carouselWidth +
(cardMarginRight * cardCount) -
carouselWidth - cardMarginRight);
// Add the click events
leftButton.addEventListener("click", function() {
if (offset !== 0) {
offset += carouselWidth + cardMarginRight;
carousel.style.transform = "translateX("+offset+"px)";
}
})
rightButton.addEventListener("click", function() {
if (offset !== maxX) {
offset -= carouselWidth + cardMarginRight;
carousel.style.transform = "translateX("+offset+"px)";
}
})
.wrapper {
height: 200px;
width: 632px;
position: relative;
overflow: hidden;
margin: 0 auto;
}
.button-wrapper {
width: 100%;
height: 100%;
display: flex;
justify-content: space-between;
align-items: center;
position: absolute;
}
.carousel {
margin: 0;
padding: 0;
list-style: none;
width: 100%;
display: flex;
position: absolute;
left: 0;
transition: all .5s ease;
}
.card {
background: black;
min-width: 632px;
height: 200px;
display: inline-block;
}
.card:nth-child(odd) {
background-color: blue;
}
.card:nth-child(even) {
background-color: red;
}
<div class="wrapper">
<ul class="carousel" data-target="carousel">
<li class="card" data-target="card">1</li>
<li class="card" data-target="card">2</li>
<li class="card" data-target="card">3</li>
<li class="card" data-target="card">4</li>
<li class="card" data-target="card">5</li>
<li class="card" data-target="card">6</li>
<li class="card" data-target="card">7</li>
<li class="card" data-target="card">8</li>
<li class="card" data-target="card">9</li>
</ul>
<div class="button-wrapper">
<button data-action="slideLeft">L</button>
<button data-action="slideRight">R</button>
</div>
</div>

Making a dragbar to resize divs inside CSS grids

I have 2 boxes and a vertical div line in one unique container div (code and fiddle below).
I'm using CSS grids to position my elements inside the container
What I'd like to accomplish is to use the vertical line to resize horizontally the two boxes based on the position of the vertical line.
I apologize if the question is noobish, I am new to web development, only used Python before, already tried to google and stackoverflow search but all solutions seem overly complicated and generally require additional libraries, I was looking for something simpler and JS only.
HTML:
<div class="wrapper">
<div class="box a">A</div>
<div class="handler"></div>
<div class="box b">B</div>
</div>
CSS:
body {
margin: 40px;
}
.wrapper {
display: grid;
grid-template-columns: 200px 8px 200px;
grid-gap: 10px;
background-color: #fff;
color: #444;
}
.box {
background-color: #444;
color: #fff;
border-radius: 5px;
padding: 20px;
font-size: 150%;
resize: both;
}
.handler{
width: 3px;
height: 100%;
padding: 0px 0;
top: 0;
background: red;
draggable: true;
}
https://jsfiddle.net/gv8Lwckh/6/

What you intend to do can be done using CSS flexbox—there is no need to use CSS grid. The bad news is that HTML + CSS is not so smart that declaring resize and draggable will make the layout flexible and adjustable by user interaction. For that, you will have to use JS. The good news is that this is actually not too complicated.
Here is a quick screen grab of output the code below:
However, for you to understand the code I will post below, you will have to familiarize yourself with:
Event binding using .addEventListener. In this case, we will use a combination of mousedown, mouseup and mousemove to determine whether the user is in the middle of dragging the element
CSS flexbox layout
Description of the solution
Initial layout using CSS
Firstly, you will want to layout your boxes using CSS flexbox. We simply declare display: flex on the parent, and then use flex: 1 1 auto (which translates to "let the element grow, let the element shrink, and have equal widths). This layout is only valid at the initial rendering of the page:
.wrapper {
/* Use flexbox */
display: flex;
}
.box {
/* Use box-sizing so that element's outerwidth will match width property */
box-sizing: border-box;
/* Allow box to grow and shrink, and ensure they are all equally sized */
flex: 1 1 auto;
}
Listen to drag interaction
You want to listen to mouse events that might have originated from your .handler element, and you want a global flag that remembers whether the user is dragging or not:
var handler = document.querySelector('.handler');
var isHandlerDragging = false;
Then you can use the following logic to check if the user is dragging or not:
document.addEventListener('mousedown', function(e) {
// If mousedown event is fired from .handler, toggle flag to true
if (e.target === handler) {
isHandlerDragging = true;
}
});
document.addEventListener('mousemove', function(e) {
// Don't do anything if dragging flag is false
if (!isHandlerDragging) {
return false;
}
// Set boxA width properly
// [...more logic here...]
});
document.addEventListener('mouseup', function(e) {
// Turn off dragging flag when user mouse is up
isHandlerDragging = false;
});
Computing the width of box A
All you are left with now is to compute the width of box A (to be inserted in the [...more logic here...] placeholder in the code above), so that it matches that of the movement of the mouse. Flexbox will ensure that box B will fill up the remaining space:
// Get offset
var containerOffsetLeft = wrapper.offsetLeft;
// Get x-coordinate of pointer relative to container
var pointerRelativeXpos = e.clientX - containerOffsetLeft;
// Resize box A
// * 8px is the left/right spacing between .handler and its inner pseudo-element
// * Set flex-grow to 0 to prevent it from growing
boxA.style.width = (pointerRelativeXpos - 8) + 'px';
boxA.style.flexGrow = 0;
Working example
var handler = document.querySelector('.handler');
var wrapper = handler.closest('.wrapper');
var boxA = wrapper.querySelector('.box');
var isHandlerDragging = false;
document.addEventListener('mousedown', function(e) {
// If mousedown event is fired from .handler, toggle flag to true
if (e.target === handler) {
isHandlerDragging = true;
}
});
document.addEventListener('mousemove', function(e) {
// Don't do anything if dragging flag is false
if (!isHandlerDragging) {
return false;
}
// Get offset
var containerOffsetLeft = wrapper.offsetLeft;
// Get x-coordinate of pointer relative to container
var pointerRelativeXpos = e.clientX - containerOffsetLeft;
// Arbitrary minimum width set on box A, otherwise its inner content will collapse to width of 0
var boxAminWidth = 60;
// Resize box A
// * 8px is the left/right spacing between .handler and its inner pseudo-element
// * Set flex-grow to 0 to prevent it from growing
boxA.style.width = (Math.max(boxAminWidth, pointerRelativeXpos - 8)) + 'px';
boxA.style.flexGrow = 0;
});
document.addEventListener('mouseup', function(e) {
// Turn off dragging flag when user mouse is up
isHandlerDragging = false;
});
body {
margin: 40px;
}
.wrapper {
background-color: #fff;
color: #444;
/* Use flexbox */
display: flex;
}
.box {
background-color: #444;
color: #fff;
border-radius: 5px;
padding: 20px;
font-size: 150%;
/* Use box-sizing so that element's outerwidth will match width property */
box-sizing: border-box;
/* Allow box to grow and shrink, and ensure they are all equally sized */
flex: 1 1 auto;
}
.handler {
width: 20px;
padding: 0;
cursor: ew-resize;
flex: 0 0 auto;
}
.handler::before {
content: '';
display: block;
width: 4px;
height: 100%;
background: red;
margin: 0 auto;
}
<div class="wrapper">
<div class="box">A</div>
<div class="handler"></div>
<div class="box">B</div>
</div>

Here's an example of the drag event handling, but using CSS Grids
The trick is to set the grid-template-columns (or rows) on the grid container rather than than the size of the grid items
let isLeftDragging = false;
let isRightDragging = false;
function ResetColumnSizes() {
// when page resizes return to default col sizes
let page = document.getElementById("pageFrame");
page.style.gridTemplateColumns = "2fr 6px 6fr 6px 2fr";
}
function SetCursor(cursor) {
let page = document.getElementById("page");
page.style.cursor = cursor;
}
function StartLeftDrag() {
// console.log("mouse down");
isLeftDragging = true;
SetCursor("ew-resize");
}
function StartRightDrag() {
// console.log("mouse down");
isRightDragging = true;
SetCursor("ew-resize");
}
function EndDrag() {
// console.log("mouse up");
isLeftDragging = false;
isRightDragging = false;
SetCursor("auto");
}
function OnDrag(event) {
if (isLeftDragging || isRightDragging) {
// console.log("Dragging");
//console.log(event);
let page = document.getElementById("page");
let leftcol = document.getElementById("leftcol");
let rightcol = document.getElementById("rightcol");
let leftColWidth = isLeftDragging ? event.clientX : leftcol.clientWidth;
let rightColWidth = isRightDragging ? page.clientWidth - event.clientX : rightcol.clientWidth;
let dragbarWidth = 6;
let cols = [
leftColWidth,
dragbarWidth,
page.clientWidth - (2 * dragbarWidth) - leftColWidth - rightColWidth,
dragbarWidth,
rightColWidth
];
let newColDefn = cols.map(c => c.toString() + "px").join(" ");
// console.log(newColDefn);
page.style.gridTemplateColumns = newColDefn;
event.preventDefault()
}
}
#page {
height: 100%;
background-color: pink;
display: grid;
grid-template-areas: 'header header header header header' 'leftcol leftdragbar tabs tabs tabs' 'leftcol leftdragbar tabpages rightdragbar rightcol' 'leftcol leftdragbar footer footer footer';
grid-template-rows: min-content 1fr 9fr 1fr;
grid-template-columns: 2fr 6px 6fr 6px 2fr;
}
/*****************************/
#header {
background-color: lightblue;
overflow: auto;
grid-area: header;
}
#leftcol {
background-color: #aaaaaa;
overflow: auto;
grid-area: leftcol;
}
#leftdragbar {
background-color: black;
grid-area: leftdragbar;
cursor: ew-resize;
}
#tabs {
background-color: #cccccc;
overflow: auto;
grid-area: tabs;
}
#tabpages {
background-color: #888888;
overflow: auto;
grid-area: tabpages;
}
#rightdragbar {
background-color: black;
grid-area: rightdragbar;
cursor: ew-resize;
}
#rightcol {
background-color: #aaaaaa;
overflow: auto;
grid-area: rightcol;
}
#footer {
background-color: lightblue;
overflow: auto;
grid-area: footer;
}
<body onresize="ResetColumnSizes()">
<div id="page" onmouseup="EndDrag()" onmousemove="OnDrag(event)">
<div id="header">
Header
</div>
<div id="leftcol">
Left Col
</div>
<div id="leftdragbar" onmousedown="StartLeftDrag()"></div>
<div id="tabs">
Tabs
</div>
<div id="tabpages">
Tab Pages
</div>
<div id="rightdragbar" onmousedown="StartRightDrag()"></div>
<div id="rightcol">
Rightcol
</div>
<div id="footer">
Footer
</div>
</div>
</body>
https://codepen.io/lukerazor/pen/GVBMZK

I changed, so you can add more Horizontal and Vertical slider.
test1.html:
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" href="test1.css">
<script src= "test1.js" > </script>
</head>
<body>
<div id="page" onmouseup="EndDrag()" onmousemove="OnDrag(event)">
<div id="header">
Header asdlkj flkdfj sdflkksdjf sd;flsdjf sd;flkjsd;fljsd;flsdj;fjsd f;sdlfj;sdlfj
</div>
<div id="leftcol">
Left Col
</div>
<div id="leftdragbar" onmousedown="StartHDrag(1)"></div>
<div id="tabs">
Tabs
</div>
<div id="topdragbar" onmousedown="StartVDrag(2)"></div>
<div id="tabpages">
Tab Pages
</div>
<div id="rightdragbar" onmousedown="StartHDrag(3)"></div>
<div id="rightcol">
Rightcol
</div>
<div id="botdragbar" onmousedown="StartVDrag(4)"></div>
<div id="footer">
Footer
</div>
</div>
<div id= 'status'></div>
</body>
</html>
test1.css
body {
}
#page {
height: 100vh;
background-color: pink;
display: grid;
grid-template-areas:
'header header header header header'
'leftcol leftdragbar tabs tabs tabs'
'leftcol leftdragbar topdragbar topdragbar topdragbar'
'leftcol leftdragbar tabpages rightdragbar rightcol'
'botdragbar botdragbar botdragbar botdragbar botdragbar'
'footer footer footer footer footer';
grid-template-rows: min-content 1fr 6px 9fr 6px 1fr;
grid-template-columns: 2fr 6px 6fr 6px 2fr;
}
/*****************************/
#header {
background-color: lightblue;
overflow: auto;
grid-area: header;
}
#leftcol {
background-color: #aaaaaa;
overflow: auto;
grid-area: leftcol;
}
#leftdragbar {
background-color: black;
grid-area: leftdragbar;
cursor: ew-resize;
}
#topdragbar {
background-color: black;
grid-area: topdragbar;
cursor: ns-resize;
}
#botdragbar {
background-color: black;
grid-area: botdragbar;
cursor: ns-resize;
}
#tabs {
background-color: #cccccc;
overflow: auto;
grid-area: tabs;
}
#tabpages {
background-color: #888888;
overflow: auto;
grid-area: tabpages;
}
#rightdragbar {
background-color: black;
grid-area: rightdragbar;
cursor: ew-resize;
}
#rightcol {
background-color: #aaaaaa;
overflow: auto;
grid-area: rightcol;
}
#footer {
background-color: lightblue;
overflow: auto;
grid-area: footer;
}
test1.js
let isHDragging = false;
let isVDragging = false;
let cols = ['2fr','6px','6fr','6px','2fr']; //grid-template-columns: 2fr 6px 6fr 6px 2fr;
let colns = ['leftcol','','tabpages','','rightcol'];
let Tcols = [];
let rows = ['min-content','1fr','6px','9fr','6px','1fr']; //grid-template-rows: min-content 1fr 6px 9fr 1fr
let rowns = ['header','tabs','','tabpages','','footer'];
let Trows = []
let CLfactor ;
let CRfactor ;
let gWcol = -1;
let gWrow = -1;
function StartHDrag(pWcol) {
isHDragging = true;
SetCursor("ew-resize");
CLfactor = parseFloat(cols[pWcol-1]) / document.getElementById(colns[pWcol-1]).clientWidth;
CRfactor = parseFloat(cols[pWcol+1]) / document.getElementById(colns[pWcol+1]).clientWidth;
Tcols = cols.map(parseFloat);
gWcol = pWcol;
}
function StartVDrag(pRow) {
isVDragging = true;
SetCursor("ns-resize");
CLfactor = parseFloat(rows[pRow-1]) / document.getElementById(rowns[pRow-1]).clientHeight;
CRfactor = parseFloat(rows[pRow+1]) / document.getElementById(rowns[pRow+1]).clientHeight;
Trows = rows.map(parseFloat);
gWrow = pRow;
}
function SetCursor(cursor) {
let page = document.getElementById("page");
page.style.cursor = cursor;
}
function EndDrag() {
isHDragging = false;
isVDragging = false;
SetCursor("auto");
}
function OnDrag(event) {
if(isHDragging) {
Tcols[gWcol-1] += (CLfactor * event.movementX);
Tcols[gWcol+1] -= (CLfactor * event.movementX);
cols[gWcol-1] = Math.max(Tcols[gWcol-1],0.01) + "fr";
cols[gWcol+1] = Math.max(Tcols[gWcol+1],0.01) + "fr";
let newColDefn = cols.join(" ");
page.style.gridTemplateColumns = newColDefn;
} else if (isVDragging) {
Trows[gWrow-1] += (CLfactor * event.movementY);
Trows[gWrow+1] -= (CLfactor * event.movementY);
rows[gWrow-1] = Math.max(Trows[gWrow-1],0.01) + "fr";
rows[gWrow+1] = Math.max(Trows[gWrow+1],0.01) + "fr";
let newRowDefn = rows.join(" ");
page.style.gridTemplateRows = newRowDefn;
document.getElementById("footer").innerHTML = newRowDefn;
}
event.preventDefault()
}

To actually match the question! Making a dragbar to resize divs inside CSS grids.
Here is a possible way, the original OP layout is kept, as well as the CSS, using Grids.
The goal is to capture the original state of the Grid Template Columns, and convert it to floats.
The browser always compute in pixels, and the sum of those columns + the gap, represent the total width of the container element. That sum must always be the same, or the elements will jump!
NB: Calls to .getComputedStyle() are not very efficient, optimisation is likely possible here!
Notice, doing this way using grids and screenX avoid the common jumping bug on mouse down.
Comments are added, this will allow to apply the logic with any number of columns, or rows, good luck.
With the usage of pointer events, it does works from a touch device as well.
let target = document.querySelector("div") // Target container element
let md = false; // Will be true at mouse down
let xorigin; // Click origin X position
let gtcorigin = []; // Origin Grid Template Columns in pixels
const pointerdown = (e) => {
if (e.target.classList[0] === "handler"){ // Filter to target the wanted element
md = true; // Set mouse down
xorigin = e.screenX; // Store the origin X position
// Grid Template Columns, array of pixels as float
gtcorigin = window.getComputedStyle(target)["grid-template-columns"].split(" ").map((a) => +(a.slice(0, -2)));
document.body.style.cursor = "col-resize" // This makes things nice
document.body.style.userSelect = "none" // This makes things nice
}
}
const pointerup = (e) => {
md = false; // Reset bool at mouse up
document.body.style.cursor = "pointer"
document.body.style.userSelect = "unset"
}
const resizer = (e) => {
if (md){ // Mouse is down hover the handler element
let gtc = window.getComputedStyle(target)["grid-template-columns"].split(" ").map((a) => +(a.slice(0, -2))); // Grid Template Columns, array of pixels as float
let xdragdif = xorigin - e.screenX; // Move in pixels since the click
gtc[0] = gtcorigin[0] - xdragdif // First column, if negative, it will grow
gtc[2] = gtcorigin[2] + xdragdif // Third column
gtc = gtc.map((a) => a+"px") // Set back the values in string with "px"
document.querySelector("console").textContent = gtc.join(" ") // !!! This is only for the demo
target.style.gridTemplateColumns = gtc.join(" ") // Apply the new Grid Template Column as inline style.
}
}
// Attach all events on the largest container element. Here the body is used.
document.body.addEventListener("pointerdown", pointerdown, false)
document.body.addEventListener("pointerup", pointerup, false)
document.body.addEventListener("pointermove", resizer, false)
body {
margin: 40px;
overflow-x: hidden
}
.wrapper {
display: grid;
grid-template-columns: 200px 8px 200px;
grid-gap: 10px;
background-color: #fff;
color: #444;
}
.box {
background-color: #444;
color: #fff;
border-radius: 5px;
padding: 20px;
font-size: 150%;
}
.handler{
width: 3px;
height: 100%;
padding: 0px 0;
top: 0;
background: red;
cursor: col-resize
}
<div class="wrapper">
<div class="box">A</div>
<div class="handler"></div>
<div class="box">B</div>
</div>
<console></console>
No limits are applied here, this can be enhanced with CSS only, using min-width and other similar rules, and the float values can be retrieved to create range sliders and more, this way.

Jquery Range Slider - Low Fill Section - How to Fill with Background-Color

I created this range slider, and i would like to fill the "lower" section of the slider with a green color similar to the blue in the example picture.
I've tried every technique i could find on the web. I read that Internet Explorer supports code for this sort of thing, but most modern browsers will need a hack to achieve this affect. I tried a gradient technique but it seemed a little too hacky for me. Nothing i try sticks.
Does anybody know a simple way to fill the lower fill section? There has to be a way-
https://codepen.io/stinkytofu3311/pen/GmKxoW
var sizeRange = ["11x17 - Starting Price <span>- $19.99</span>", // Store string inside of an Array
"24x36 - Starting Price <span>- $29.99</span>",
"70x90 - Starting Price <span>- $39.99</span>",
"120x50 - Starting Price <span>- $49.99</span>",
"67x18 - Starting Price <span>- $59.99</span>",
"19x30 - Starting Price <span>- $69.99</span>"]
var imageUrl = new Array(); // Store images inside of an Array
imageUrl[0] = 'http://svgshare.com/i/1Ak.svg';
imageUrl[1] = 'http://svgshare.com/i/1AQ.svg';
imageUrl[2] = 'http://svgshare.com/i/1Bb.svg';
imageUrl[3] = 'http://svgshare.com/i/1Am.svg';
imageUrl[4] = 'http://svgshare.com/i/1CG.svg';
imageUrl[5] = 'http://svgshare.com/i/1By.svg';
$('#sliderPrice').html( sizeRange[0] );
$(document).on('input change', '#range-slider', function() { //Listen to slider changes (input changes)
var v=$(this).val(); //Create a Variable (v), and store the value of the input change (Ex. Image 2 [imageURL])
$('#sliderStatus').html( $(this).val() );
$('#sliderPrice').html( sizeRange[v] );
$("#img").prop("src", imageUrl[v]); // Modify the Images attribute src based on the sliders value, and input the value inside the imageURL[v] to display image
});
// ::::: Range Slider Thumb ::::: //
$("#range-slider").on("mousedown", function() { //1. When user clicks their mouse down on the Range-Slider
$(this).removeClass().addClass("thumb-down");//1.1 Remove default class from CSS, and add the class .thumb-down (changes background color)
$(this).addClass("hover-ring");//1.2 Remove default class from CSS, and add the class .hover-ring (changes box-shadow to a green color)
});
$("#range-slider").on("mouseup", function() { //2. When user mouse-up on Range-Slider
$(this).addClass("thumb-up"); //2.1 Changes thumb color back to light green
$(this).addClass("hover-ring-out"); //2.2 Removes Box-Shadow
});
#import url('https://fonts.googleapis.com/css?family=Roboto');
.product-range-wrapper {
displat: -webkit-flex;
displat:flex;
-webkit-flex-direction: column;
flex-direction:column;
max-width:600px;
margin:0px auto;
/*outline: 1px solid purple;*/
}
.product-range-block {
display: -webkit-flex;
display:flex;
-webkit-flex-direction: row;
flex-direction: row;
width:100%;
height:100%;
/*outline: 1px solid red;*/
}
.ref-height-block {
flex-grow:3;
/*background-color:red;*/
}
.size-chart-block {
flex-grow:9;
/*background-color:green;*/
}
.product-range-block img {
width:90%;
/*outline: 1px solid blue;*/
}
#img {
width: 100% !important;
}
/* ::::::::::::::::::::Range Slider Styles::::::::::::::::::::::::: */
.range-slider-block {
margin:0px auto;
width:90%;
}
#range-slider {
padding:40px 0px;
width:100%;
/*outline: 1px solid green;*/
}
/* Remove Range Sliders Default Styles*/
input[type=range]{
-webkit-appearance: none;
}
/* Track */
input[type=range]::-webkit-slider-runnable-track {
height: 10px;
background: #d7d7d7;
border: none;
border-radius: 6px;
}
input[type=range]:focus {
outline: none;
}
/* Thumb */
input[type=range]::-webkit-slider-thumb {
-webkit-appearance: none;
border: none;
height: 30px;
width: 30px;
border-radius: 50%;
background: #46947F;
margin-top: -9px;
transition: box-shadow 0.5s;
}
input[type=range]:hover::-webkit-slider-thumb {
box-shadow: 0 0 0 10pt rgba(190,190,190,0.4);
cursor:pointer;
}
/* JS Styles */
/* Changes Thumb color to darker green when mousedownn */
input[type=range].thumb-down::-webkit-slider-thumb {
background:#316557;
}
/* Changes Thumb color back to light green when mouseup */
input[type=range].thumb-up::-webkit-slider-thumb {
background:#46947F;
}
/* Changes Ring color Green */
input[type=range].hover-ring::-webkit-slider-thumb {
box-shadow: 0 0 0 6pt rgba(70,148,127,0.46);
cursor:pointer;
}
input[type=range].hover-ring-out::-webkit-slider-thumb {
box-shadow: 0 0 0 0pt rgba(0,0,0,0);
cursor:pointer;
}
/* Input Value Styles */
#slider_count {
margin:0px auto;
width:100%;
padding:0px 20px;
text-align:center;
}
#sliderPrice {
font-family: 'Roboto', sans-serif;
font-size:22px;
font-weight:600;
}
#sliderPrice span {
font-weight:600;
color:red;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<link href="https://fonts.googleapis.com/css?family=Roboto" rel="stylesheet">
<div class="product-range-wrapper">
<div class="product-range-block">
<div class="ref-height-block">
<img src="http://svgshare.com/i/1Ba.svg" alt="Product Height Refrence" height="" width="">
</div>
<div class="size-chart-block">
<img src="http://svgshare.com/i/1Ak.svg" style='' id='img'/>
</div>
</div>
<div id="slider_count"><span id="sliderPrice">0</span></div>
<div class="range-slider-block">
<input type="range" id="range-slider" value="0.0" min="0" max="5" step="1" />
</div>
</div>
<div id="slider_count">Slider Value = <span id="sliderStatus">0</span></div>
<br/>

I managed to get a working version here: http://codepen.io/anon/pen/LyxYVY
var sheet = document.createElement('style'),
$rangeInput = $('.range'),
prefs = ['webkit-slider-runnable-track', 'moz-range-track', 'ms-track'];
document.body.appendChild(sheet);
var getTrackStyle = function (el) {
var curVal = el.value,
style = '';
for (var i = 0; i < prefs.length; i++) {
style += '.range::-' + prefs[i] + '{background: linear-gradient(to right, #34495e 0%, #34495e ' + curVal*20 + '%, #fff ' + curVal + '%, #fff 100%)}';
}
return style;
}
$rangeInput.on('input', function () {
sheet.textContent = getTrackStyle(this);
});
You can use the webkit, firefox and ms track options. However they will only work on compatible browsers.

Scrollable div to stick to bottom, when outer div changes in size

Here is an example chat app ->
The idea here is to have the .messages-container take up as much of the screen as it can. Within .messages-container, .scroll holds the list of messages, and in case there are more messages then the size of the screen, scrolls.
Now, consider this case:
The user scrolls to the bottom of the conversation
The .text-input, dynamically gets bigger
Now, instead of the user staying scrolled to the bottom of the conversation, the text-input increases, and they no longer see the bottom.
One way to fix it, if we are using react, calculate the height of text-input, and if anything changes, let .messages-container know
componentDidUpdate() {
window.setTimeout(_ => {
const newHeight = this.calcHeight();
if (newHeight !== this._oldHeight) {
this.props.onResize();
}
this._oldHeight = newHeight;
});
}
But, this causes visible performance issues, and it's sad to be passing messages around like this.
Is there a better way? Could I use css in such a way, to express that when .text-input-increases, I want to essentially shift up all of .messages-container

2:nd revision of this answer
Your friend here is flex-direction: column-reverse; which does all you ask while align the messages at the bottom of the message container, just like for example Skype and many other chat apps do.
.chat-window{
display:flex;
flex-direction:column;
height:100%;
}
.chat-messages{
flex: 1;
height:100%;
overflow: auto;
display: flex;
flex-direction: column-reverse;
}
.chat-input { border-top: 1px solid #999; padding: 20px 5px }
.chat-input-text { width: 60%; min-height: 40px; max-width: 60%; }
The downside with flex-direction: column-reverse; is a bug in IE/Edge/Firefox, where the scrollbar doesn't show, which your can read more about here: Flexbox column-reverse and overflow in Firefox/IE
The upside is you have ~ 90% browser support on mobile/tablets and ~ 65% for desktop, and counting as the bug gets fixed, ...and there is a workaround.
// scroll to bottom
function updateScroll(el){
el.scrollTop = el.scrollHeight;
}
// only shift-up if at bottom
function scrollAtBottom(el){
return (el.scrollTop + 5 >= (el.scrollHeight - el.offsetHeight));
}
In the below code snippet I've added the 2 functions from above, to make IE/Edge/Firefox behave in the same way flex-direction: column-reverse; does.
function addContent () {
var msgdiv = document.getElementById('messages');
var msgtxt = document.getElementById('inputs');
var atbottom = scrollAtBottom(msgdiv);
if (msgtxt.value.length > 0) {
msgdiv.innerHTML += msgtxt.value + '<br/>';
msgtxt.value = "";
} else {
msgdiv.innerHTML += 'Long long content ' + (tempCounter++) + '!<br/>';
}
/* if at bottom and is IE/Edge/Firefox */
if (atbottom && (!isWebkit || isEdge)) {
updateScroll(msgdiv);
}
}
function resizeInput () {
var msgdiv = document.getElementById('messages');
var msgtxt = document.getElementById('inputs');
var atbottom = scrollAtBottom(msgdiv);
if (msgtxt.style.height == '120px') {
msgtxt.style.height = 'auto';
} else {
msgtxt.style.height = '120px';
}
/* if at bottom and is IE/Edge/Firefox */
if (atbottom && (!isWebkit || isEdge)) {
updateScroll(msgdiv);
}
}
/* fix for IE/Edge/Firefox */
var isWebkit = ('WebkitAppearance' in document.documentElement.style);
var isEdge = ('-ms-accelerator' in document.documentElement.style);
var tempCounter = 6;
function updateScroll(el){
el.scrollTop = el.scrollHeight;
}
function scrollAtBottom(el){
return (el.scrollTop + 5 >= (el.scrollHeight - el.offsetHeight));
}
html, body { height:100%; margin:0; padding:0; }
.chat-window{
display:flex;
flex-direction:column;
height:100%;
}
.chat-messages{
flex: 1;
height:100%;
overflow: auto;
display: flex;
flex-direction: column-reverse;
}
.chat-input { border-top: 1px solid #999; padding: 20px 5px }
.chat-input-text { width: 60%; min-height: 40px; max-width: 60%; }
/* temp. buttons for demo */
button { width: 12%; height: 44px; margin-left: 5%; vertical-align: top; }
/* begin - fix for hidden scrollbar in IE/Edge/Firefox */
.chat-messages-text{ overflow: auto; }
#media screen and (-webkit-min-device-pixel-ratio:0) {
.chat-messages-text{ overflow: visible; }
/* reset Edge as it identifies itself as webkit */
#supports (-ms-accelerator:true) { .chat-messages-text{ overflow: auto; } }
}
/* hide resize FF */
#-moz-document url-prefix() { .chat-input-text { resize: none } }
/* end - fix for hidden scrollbar in IE/Edge/Firefox */
<div class="chat-window">
<div class="chat-messages">
<div class="chat-messages-text" id="messages">
Long long content 1!<br/>
Long long content 2!<br/>
Long long content 3!<br/>
Long long content 4!<br/>
Long long content 5!<br/>
</div>
</div>
<div class="chat-input">
<textarea class="chat-input-text" placeholder="Type your message here..." id="inputs"></textarea>
<button onclick="addContent();">Add msg</button>
<button onclick="resizeInput();">Resize input</button>
</div>
</div>
Side note 1: The detection method is not fully tested, but it should work on newer browsers.
Side note 2: Attach a resize event handler for the chat-input might be more efficient then calling the updateScroll function.
Note: Credits to HaZardouS for reusing his html structure

You just need one CSS rule set:
.messages-container, .scroll {transform: scale(1,-1);}
That's it, you're done!
How it works: First, it vertically flips the container element so that the top becomes the bottom (giving us the desired scroll orientation), then it flips the content element so that the messages won't be upside down.
This approach works in all modern browsers. It does have a strange side effect, though: when you use a mouse wheel in the message box, the scroll direction is reversed. This can be fixed with a few lines of JavaScript, as shown below.
Here's a demo and a fiddle to play with:
//Reverse wheel direction
document.querySelector('.messages-container').addEventListener('wheel', function(e) {
if(e.deltaY) {
e.preventDefault();
e.currentTarget.scrollTop -= e.deltaY;
}
});
//The rest of the JS just handles the test buttons and is not part of the solution
send = function() {
var inp = document.querySelector('.text-input');
document.querySelector('.scroll').insertAdjacentHTML('beforeend', '<p>' + inp.value);
inp.value = '';
inp.focus();
}
resize = function() {
var inp = document.querySelector('.text-input');
inp.style.height = inp.style.height === '50%' ? null : '50%';
}
html,body {height: 100%;margin: 0;}
.conversation {
display: flex;
flex-direction: column;
height: 100%;
}
.messages-container {
flex-shrink: 10;
height: 100%;
overflow: auto;
}
.messages-container, .scroll {transform: scale(1,-1);}
.text-input {resize: vertical;}
<div class="conversation">
<div class="messages-container">
<div class="scroll">
<p>Message 1<p>Message 2<p>Message 3<p>Message 4<p>Message 5
<p>Message 6<p>Message 7<p>Message 8<p>Message 9<p>Message 10<p>Message 11<p>Message 12<p>Message 13<p>Message 14<p>Message 15<p>Message 16<p>Message 17<p>Message 18<p>Message 19<p>Message 20
</div>
</div>
<textarea class="text-input" autofocus>Your message</textarea>
<div>
<button id="send" onclick="send();">Send input</button>
<button id="resize" onclick="resize();">Resize input box</button>
</div>
</div>
Edit: thanks to #SomeoneSpecial for suggesting a simplification to the scroll code!

Please try the following fiddle - https://jsfiddle.net/Hazardous/bypxg25c/. Although the fiddle is currently using jQuery to grow/resize the text area, the crux is in the flex related styles used for the messages-container and input-container classes -
.messages-container{
order:1;
flex:0.9 1 auto;
overflow-y:auto;
display:flex;
flex-direction:row;
flex-wrap:nowrap;
justify-content:flex-start;
align-items:stretch;
align-content:stretch;
}
.input-container{
order:2;
flex:0.1 0 auto;
}
The flex-shrink value is set to 1 for .messages-container and 0 for .input-container. This ensures that messages-container shrinks when there is a reallocation of size.

I've moved text-input within messages, absolute positioned it to the bottom of the container and given messages enough bottom padding to space accordingly.
Run some code to add a class to conversation, which changes the height of text-input and bottom padding of messages using a nice CSS transition animation.
The JavaScript runs a "scrollTo" function at the same time as the CSS transition is running to keep the scroll at the bottom.
When the scroll comes off the bottom again, we remove the class from conversation
Hope this helps.
https://jsfiddle.net/cnvzLfso/5/
var doScollCheck = true;
var objConv = document.querySelector('.conversation');
var objMessages = document.querySelector('.messages');
var objInput = document.querySelector('.text-input');
function scrollTo(element, to, duration) {
if (duration <= 0) {
doScollCheck = true;
return;
}
var difference = to - element.scrollTop;
var perTick = difference / duration * 10;
setTimeout(function() {
element.scrollTop = element.scrollTop + perTick;
if (element.scrollTop === to) {
doScollCheck = true;
return;
}
scrollTo(element, to, duration - 10);
}, 10);
}
function resizeInput(atBottom) {
var className = 'bigger',
hasClass;
if (objConv.classList) {
hasClass = objConv.classList.contains(className);
} else {
hasClass = new RegExp('(^| )' + className + '( |$)', 'gi').test(objConv.className);
}
if (atBottom) {
if (!hasClass) {
doScollCheck = false;
if (objConv.classList) {
objConv.classList.add(className);
} else {
objConv.className += ' ' + className;
}
scrollTo(objMessages, (objMessages.scrollHeight - objMessages.offsetHeight) + 50, 500);
}
} else {
if (hasClass) {
if (objConv.classList) {
objConv.classList.remove(className);
} else {
objConv.className = objConv.className.replace(new RegExp('(^|\\b)' + className.split(' ').join('|') + '(\\b|$)', 'gi'), ' ');
}
}
}
}
objMessages.addEventListener('scroll', function() {
if (doScollCheck) {
var isBottom = ((this.scrollHeight - this.offsetHeight) === this.scrollTop);
resizeInput(isBottom);
}
});
html,
body {
height: 100%;
width: 100%;
background: white;
}
body {
margin: 0;
padding: 0;
}
.conversation {
display: flex;
flex-direction: column;
justify-content: space-between;
height: 100%;
position: relative;
}
.messages {
overflow-y: scroll;
padding: 10px 10px 60px 10px;
-webkit-transition: padding .5s;
-moz-transition: padding .5s;
transition: padding .5s;
}
.text-input {
padding: 10px;
-webkit-transition: height .5s;
-moz-transition: height .5s;
transition: height .5s;
position: absolute;
bottom: 0;
height: 50px;
background: white;
}
.conversation.bigger .messages {
padding-bottom: 110px;
}
.conversation.bigger .text-input {
height: 100px;
}
.text-input input {
height: 100%;
}
<div class="conversation">
<div class="messages">
<p>
This is a message content
</p>
<p>
This is a message content
</p>
<p>
This is a message content
</p>
<p>
This is a message content
</p>
<p>
This is a message content
</p>
<p>
This is a message content
</p>
<p>
This is a message content
</p>
<p>
This is a message content
</p>
<p>
This is a message content
</p>
<p>
This is a message content
</p>
<p>
This is a message content
</p>
<p>
This is a message content
</p>
<p>
This is a message content
</p>
<p>
This is a message content
</p>
<p>
This is the last message
</p>
<div class="text-input">
<input type="text" />
</div>
</div>
</div>

You write;
Now, consider this case:
The user scrolls to the bottom of the conversation
The .text-input, dynamically gets bigger
Wouldn't the method that dynamically sets the .text-input be the logical place to fire this.props.onResize().

To whom it may concern,
The answers above did not suffice my question.
The solution I found was to make my innerWidth and innerHeight variable constant - as the innerWidth of the browser changes on scroll to adapt for the scrollbar.
var innerWidth = window.innerWidth
var innerHeight = window.innerHeight
OR FOR REACT
this.setState({width: window.innerWidth, height: window.innerHeight})
In other words, to ignore it, you must make everything constant as if it were never scrolling. Do remember to update these on Resize / Orientation Change !

IMHO current answer is not a correct one:
1/ flex-direction: column-reverse; reverses the order of messages - I didn't want that.
2/ javascript there is also a bit hacky and obsolete
If you want to make it like a PRO use spacer-box which has properties:
flex-grow: 1;
flex-basis: 0;
and is located above messages. It pushes them down to the chat input.
When user is typing new messages and input height is growing the scrollbar moves up, but when the message is sent (input is cleared) scrollbar is back at bottom.
Check my snippet:
body {
background: #ccc;
}
.chat {
display: flex;
flex-direction: column;
width: 300px;
max-height: 300px;
max-width: 90%;
background: #fff;
}
.spacer-box {
flex-basis: 0;
flex-grow: 1;
}
.messages {
display: flex;
flex-direction: column;
overflow-y: auto;
flex-grow: 1;
padding: 24px 24px 4px;
}
.footer {
padding: 4px 24px 24px;
}
#chat-input {
width: 100%;
max-height: 100px;
overflow-y: auto;
border: 1px solid pink;
outline: none;
user-select: text;
white-space: pre-wrap;
overflow-wrap: break-word;
}
<div class="chat">
<div class="messages">
<div class="spacer-box"></div>
<div class="message">1</div>
<div class="message">2</div>
<div class="message">3</div>
<div class="message">4</div>
<div class="message">5</div>
<div class="message">6</div>
<div class="message">7</div>
<div class="message">8</div>
<div class="message">9</div>
<div class="message">10</div>
<div class="message">11</div>
<div class="message">12</div>
<div class="message">13</div>
<div class="message">14</div>
<div class="message">15</div>
<div class="message">16</div>
<div class="message">17</div>
<div class="message">18</div>
</div>
<div class="footer">
<div contenteditable role="textbox" id="chat-input"></div>
</div>
<div>
Hope I could help :)
Cheers