We Keep Coding

Beginner - I want the scroll bar to move down with JS

Following guys, I used the code:
window.scrollBy (0, window.innerHeight)
And yes, it scrolls down the instagram home page.
However, when I go to my story, and see who viewed it, I want him to scroll the story's NOT scroll bar on the home page.
When I open the console and use the code I mentioned above, it returns me undefined and does not do what I want.
How do I scroll the bar of people who have viewed my story? Not from the home page (complete)?
EDIT
enter image description here

var button = document.querySelector('#scroll-child')
button.addEventListener('click', function() {
var childBlock = document.querySelector('.child')
childBlock.scroll(0, 50)
})
.parent {
height: 300px;
background-color: yellow;
text-align: center;
overflow: scroll;
}
.child {
width: 300px;
height: 200px;
background-color: crimson;
text-align: center;
overflow: scroll;
}
.child-content {
margin: 20px;
height: 1000px;
}
<div class="parent">
<button id="scroll-child">
scroll child content!
</button>
<div class="child">
<div class="child-content">
something1
something2
something3
something4
something5
something6
something7
something8
</div>
</div>
</div>
find your story block with its css selector:
var storyBlock = document.querySelector('#my-story-block-id')
scroll inside block
storyBlock.scroll(0, storyBlock.innerHeight)

Fixed row/column header with css and javascript

I need a layout with fixed column/row header. After some "trial and error" I came up with this solution (see jsfiddle). Only the lower right pane is scrollable, and the headers are moved using javascript.
Everything is fine in Chrome, but in IE/Edge the scrolling is laggy: the left and the right part are not scrolled on the same time but with a minimal delay (especially it the content is "big") which is annoying. Do you see any solution? I have to find another way to achieve the result (and in this case do you have any suggestion)?
$(function() {
init();
});
function init(){
var div1=$("#mainContainer");
var oldScrollTop = $(div1).scrollTop();
$(div1)
.scroll( function () {
if (oldScrollTop == $(div1).scrollTop()){
scrollRowTableHeader(); //horizontal scroll
}else {
oldScrollTop = $(div1).scrollTop();
scrollColumnTableHeader(); //vertical scroll
}
});
}
function scrollColumnTableHeader() {
var vScrollPanel = $("#mainContainer"),
headerPanelContent = $("#headerPanelContent"),
colHeaderPanelContent = $("#colHeaderPanelContent");
var colHeaderPanelContent2 = document.getElementById('headerContent');
colHeaderPanelContent2.style.top = (0 - vScrollPanel.scrollTop())+"px";
};
function scrollRowTableHeader() {
var vScrollPanel = $("#mainContainer"),
headerPanelContent = $("#headerPanelContent"),
colHeaderPanel = $("#colHeaderPanel");
var headerPanelContent2 = document.getElementById('headerPanelContent');
headerPanelContent2.style.left = (0 - vScrollPanel.scrollLeft())+"px";
};
#container {
/*background-color: green;*/
display: flex;
}
.item {
background-color: white;
border: 1px solid black;
flex-grow: 0;
}
.bigContent{
height: 1000px;
width: 1000px;
}
.scroll{
overflow: auto;
height: 300px;
width: 500px;
}
.colheader{
height: 300px;
width: 200px;
/*position: relative;*/
z-index: 1;
overflow:hidden;
display: inline;
border: solid 1px;
}
.headerContent{
background: lightgrey;
height: 1000px;
width: 200px;
position: relative;
border: solid 1px;
}
.rowHeaderContent{
background: whitesmoke;
height: 100px;
width: 200px;
position: relative;
}
.rowColHeaderContent{
background: lightyellow;
height: 100px;
width: 200px;
border: solid 1px;
}
.headerPanel{
overflow: hidden;
width: 500px;
border: solid 1px;
}
.tableProperties{
table-layout: fixed;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<div id="container">
<div id="header" class="header">
<div class="rowColHeaderContent">
<table class="tableProperties">
<tr><td>Row/Col Header</td></tr>
</table>
</div>
</div>
<div id="headerPanel" class="headerPanel">
<div id="headerPanelContent" class="rowHeaderContent">
<table width="500px" class="tableProperties">
<colgroup><col width="50"><col width="40"><col width="40"><col width="40"><col width="45"><col width="40"></colgroup>
<tr><td>Some content (header)</td><td>Some content</td><td>Some content</td><td>Some content</td><td>Some content</td><td>Some content</td></tr>
</table>
</div>
</div>
</div>
<div id="container">
<div id="colheader" class="colheader">
<div id="headerContent" class="headerContent">
<table width="500px" class="tableProperties">
<tr><td>Column Header</td></tr>
<tr><td>Column Header</td></tr>
<tr><td>Column Header</td></tr>
<tr><td>Column Header</td></tr>
<tr><td>Column Header</td></tr>
<tr><td>Column Header</td></tr>
</table>
</div>
</div>
<div id="mainContainer" class="item scroll">
<div class="bigContent">
<table width="500px" class="tableProperties">
<colgroup><col width="50"><col width="40"><col width="40"><col width="40"><col width="45"><col width="40"></colgroup>
<tr><td>Some content</td><td>Some content</td><td>Some content</td><td>Some content</td><td>Some content</td><td>Some content</td></tr>
</table>
</div>
</div>
</div>

So, this is not a direct answer to your really complex issue, but here goes..
First of all looks like you are in the first steps of trying to create a fixed-column and fixed-row table. It might seem to be working at first, but, trust me, the way you are trying to achieve it is not going to work well and the reason is that since table-cell widths are set arbitrarily for each table, you won't be able to align the header table with the content table below it. So, you will either have to follow a different approach than the current way you are taking - tips imminent.
First things first, the problem with a lot of data in this kind of situation is more noticeable in IE11 - the lag is lighter in IE edge and there is no lag in other browsers. In your case you can use debouncing in order to reduce the js calls while scrolling.
setInterval(function(){
// Scroll stuff here
}, 2)
The interval doesn't have to be high, a light lag will be visible, but it will be a great improvement compared to how (I suppose) it currently works.
Also try using Javascript functions that work with minimum impact, eg use .attr instead of .style; also try using CSS3 transforms instead of normal transforms.
So concerning the different approach - you have to somehow the scrolling header and content be in the same table - ideally the fixed column as well. Here are some tips. It is necessary to remove word wrapping within the table cells by using white-space:nowrap for the following tips to work as intended. The concept might be difficult to grasp, but once you encounter each issue they will make sense.
First of all add some top padding to the table that will accommodate the header elements described next. Create both p and span elements inside the header cells and place the same header content in both of them. Absolutely position the span elements using CSS3 transforms towards the top.
The 'p' elements will remain static, but not visible - hide them using visibility, opacity and height:0. Paragraph elements will be used in case the th content exceeds the td content.
In order to scroll everything with decent performance you will HAVE to use CSS3 transforms to scroll the span elements (careful: the span elements!) after you cache them on page load.
Hope these tips help you out, for any questions feel free to ask - it will be difficult to digest at first but it will make sense.

If you want Only the lower right pane is scrollable?
I just used css like :-
.headerContent{
background: lightgrey;
height: 1000px;
width: 200px;
position: static;
border: solid 1px;
}
Changed position: relative into static...

Resizing one element using jQuery UI changing the position of another

I am trying to make resizible and draggable lines out of labels using jQuery UI.
The problem is, if I add two labels and try to resize the first label, it changes the position of the second label (but if I resize the second label it does not change the position of the first label).
How to prevent labels from changing other label's position while resizing..?
HTML:
<div id="main">
<button id="s">add line</button>
</div>
<div id="line" class="hidden">
<label class="dra"></label>
</div>
JS:
function makeline() {
$t = $(".dra", "#line").clone(true).draggable().resizable({
handles: "s, n"
});
$("#main").append($t);
}
$("#s").click(function () {
makeline();
});
CSS:
.dra {
display: block;
background-color:red;
width: 7px;
height: 80px;
border: 1px solid red;
}
.hidden {
display: none;
}
#main {
border: 1px solid black;
width:500px;
height: 300px;
}
UPDATE: Full code in JSFiddle

This is happening because the jQuery UI widgets set the position of element to relative by default, leaving it in the normal flow of the document. You can work around this issue by applying position:absolute for the elements like:
.ui-resizable {
position:absolute !important;
}
This will cause them to stack on top of each other rather than one below another since they aren't in the normal flow anymore. You can easily fix this using the jQuery ui position() utility method as shown below:
$("#s").click(function() {
$t = $("#line .dra").clone(true).draggable().resizable({
handles: "s, n"
})
if ($("#main").find(".dra").length) {
$t.position({
at: "left bottom",
of: "#main .dra:last"
})
};
$("#main").append($t);
});
.dra {
display: block;
background-color: red;
width: 7px;
height: 80px;
border: 1px solid red;
}
.hidden {
display: none;
}
#main {
border: 1px solid black;
width: 500px;
height: 300px;
}
.ui-resizable {
position: absolute !important;
}
<link rel="stylesheet" href="//code.jquery.com/ui/1.11.2/themes/smoothness/jquery-ui.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="//code.jquery.com/ui/1.11.2/jquery-ui.js"></script>
<div class="form-group">
<label>ADD two line and RESIZE THE FIRST LINE it will scroll down the line added after it. NOW add a 3rd line and resize the second line it will scroll down the 3rd line and if you resize the very first line you added it will scroll down the other lines</label>
<div id="main">
<button id="s">add line</button>
</div>
<div id="line" class="hidden">
<label class="dra"></label>
</div>
You can adjust the positioning however you want.

If your label is:
<div class="label">Lorem ipsum</div>
add this CSS:
.label {
white-space: nowrap;
}

Make Div fixed bottom & scrollable

I want to have a long page, with a fixed top 100px div, and a fixed 50px bottom div. However, I want the bottom div to scroll as you scroll down the page.
Its hard to explain, but the best example of this is on the front page of PayPal.com
On the first page load, the bottom div looks like it is fixed, and as you adjust the height of the browser window, that div stays at the bottom. Yet as you scroll down the page it is not fixed.
Can anyone explain how they have done this? I am trying to re-create something similar, but cant see how they have managed it.
As far as I can see they have this html...
<div id="fixed-top">
<header class="table-row">
// header content
</header>
<div class="table-row table-row-two">
// Video content
</div>
<div class="table-row">
//bottom content
</div>
</div>
And this CSS...
#fixed-top {
height: 100%;
width: 100%;
display: table;
position: relative;
top: 0;
left: 0;
z-index: 1;
}
.table-row {
display: table-row;
}
But that alone doesn't do it. I also can't see any js thats getting window height and applying it to the main fixed div.
Help! :)
EDIT:
Have just found a way to do it with javascript, controlling the height of the middle row using the window height, minus the 150px for the header and third row.
jQuery(document).ready(function(){
$('div.table-row-two').css({'height':(($(window).height())-150)+'px'});
$(window).resize(function(){
$('div.table-row-two').css({'height':(($(window).height())-150)+'px'});
});
});
But saying that, Zwords CSS only method seems like a winner.

From what I understand, you are looking for something like a sticky footer. So basically if the content is not enough, the footer should go sit at the bottom like its fixed, but if content comes in, it should scroll down like other content.
Try this - http://css-tricks.com/snippets/css/sticky-footer/

First off, you'll need to set the height of the body and html tag, otherwise the table won't take the full screen. Then I altered your code, made it a bit easier.
HTML:
<div id="fixed-top">
<header>
// header content
</header>
<div>
// Video content
</div>
<div>
//bottom content
</div>
</div>
CSS:
html, body {
margin: 0;
padding: 0;
height: 100%;
min-height: 100%;
}
#fixed-top {
display: table;
width: 100%;
height: 100%;
}
#fixed-top > * { /* makes all the direct children of #fixed-top a table row*/
display: table-row;
background: lightblue;
}
#fixed-top > *:nth-child(1) {
background: lightgreen;
height: 40px;
}
#fixed-top > *:nth-child(3) {
background: lightgreen;
height: 25%;
}
You can either set the height to a fix height (in px) or percentages. If you only give two of the three rows a height, the third one will automaticly fill up the rest space.
Also, check this demo.

Check this fiddle / Fullscreen
Using display:table;,display:table-row;,min-height to adjust to screen
HTML
<div class="wrapper">
<div class="row">menu</div>
<div class="row">content</div>
<div class="row">footer</div>
</div>
<div class="wrapper">
<div class="row">content1</div>
<div class="row">content2</div>
<div class="row">content3</div>
</div>
CSS
html,body,.wrapper{
width:100%;
height:100%;
margin:0px auto;
padding:0px;
}
.wrapper{
display:table;
border:1px solid black;
}
.wrapper .row{
display:table-row;
background-color:rgb(220,220,220);
}
.wrapper .row:nth-of-type(1){
min-height:15px;
}
.wrapper .row:nth-of-type(2){
height:100%;
background-color:white;
}
.wrapper .row:nth-of-type(3){
min-height:15px
}

You can do this easily with jQuery using $(window).height() and subtracting your footer/header's heights. See Fiddle for an example.

Place animated footer under other divs

so I wanted an animated footer for my webpage using jquery. There's supposed to be a button which should trigger the animation. I found a nice example for all this, and everything is fine and dandy. Except that the button (including the footer) has this code that makes it stick to the bottom of your web browser, rather than to the bottom of the page. I do [i]not[/i] want it to, like, "scroll" along with the page, I realy want it to be underneath all my other divs. I tried putting it in the div container (which has all my other divs in it as well), but that doesn't seem to work.
Now, (after 2.5 hours of googling) I found out that it might/may/could have something to do with "absolute" positioning in the CSS, so I tried switching some things around such as giving the footer's container a relative position or giving it an "overflow: hidden;" along with the rest a left float but nothing seemed to solve my problem. (I could've done something wrong, not that great with CSS after all :-/)
I hope someone is able/willing to help.
P.S. Here's the example I used:
http://return-true.com/2010/04/jquery-pop-up-footer-version-2/
and here's the code:
Javascript:
jQuery(function($) {
var open = false;
$('#footerSlideButton').click(function () {
if(open === false) {
$('#footerSlideContent').animate({ height: '300px' });
$(this).css('backgroundPosition', 'bottom left');
open = true;
} else {
$('#footerSlideContent').animate({ height: '0px' });
$(this).css('backgroundPosition', 'top left');
open = false;
}
});
});
HTML:
<div id="footerPlacement">
<div id="footerSlideContainer">
<div id="footerSlideButton"></div>
<div id="footerSlideContent">
<div id="footerSlideText">
<h3>Hey! I'm a Sliding Footer</h3>
<p>What's a Sliding Footer? Well I'm a cool little element which can be hidden from view, and revealed when the user wants to see me.</p>
<p>What can you use me for? Well look at all this stuff:</p>
<ul>
<li>Sales information</li>
<li>Important updates</li>
<li>Unobtrusive about panel</li>
<li>Or just a good ol' footer</li>
</ul>
<p>There are obviously many other uses, but these are the few useful ones I can think of.</p>
</div>
</div>
</div>
</div>
CSS:
#footerPlacement {
margin-bottom: 0px;
width: 1000px;
margin-left: auto;
margin-right: auto;
}
#footerSlideContainer {
position: fixed;
margin-left: 0px;
bottom:0px;
width: 1000px;
}
#footerSlideButton {
background: url('../images/footer/footerbtn.png') top left no-repeat transparent;
position: absolute;
top: -55px;
right: 20px;
width:50px;
height:50px;
border: none;
cursor: pointer;
}
#footerSlideContent {
width: 100%;
height: 10px;
background: #251b15;
color: #CCCCCC;
font-size: 0.8em;
border: none;
font-family: DejaVuSansBook, Sans-Serif;
}
#footerSlideText {
padding: 15px 10px 25px 25px;
}
Thanks in advance!

if you change your #footerPlacement to include position:relative, you can change #footerSlideContainer to be position:absolute and then your footer will sit below any content above it.
However you will need to make the content have a min-height of around 350px for the footer to work properly and if your content isn't long enough, the footer won't be at the bottom of the browser.
I also added overflow:hidden to #footerSlideContent. I have made a fiddle to demonstrate:
http://jsfiddle.net/tc6b8/