here i want to apply some css to those divs are not visible because if its height. So i want to apply some css dynamically which are not showing here(sanjana, giri, santhosh divs)
<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
</head>
<body>
<div style="height:100px;overflow:hidden;background:red;border:2px dashed #000;">
<div>Ganesh</div>
<div>Om shankar</div>
<div>Sai</div>
<div>venkat</div>
<div>Sireesha</div>
<div>Sanjana</div>
<div>Giri</div>
<div>Santhosh</div>
</div>
</body>
</html>
If it's inline defined, you can use this:
[style*="overflow:hidden;"],[style*="overflow: hidden;"]
What it does is looking for ANY type of tag,
that has a style attribute set
and that style attribute contains: overflow:hidden; or overflow: hidden;
then applies relevant styles.
var value = 'initial';
var old = 'hidden';
function toggle() {
$('div[style]').css({'overflow':value});
var tmp = value;
value = old;
old = tmp;
}
[style*="overflow:hidden;"],[style*="overflow: hidden;"] {
color:white;
}
<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
</head>
<body>
<input type="button" onclick="toggle()" value="toggle values">
<div style="height:100px;overflow:hidden;background:red;border:2px dashed #000;">
<div>Ganesh</div>
<div>Om shankar</div>
<div>Sai</div>
<div>venkat</div>
<div>Sireesha</div>
<div>Sanjana</div>
<div>Giri</div>
<div>Santhosh</div>
</div>
</body>
</html>
Now if you only wish to do something to the NOT visible divs, you need to use javascript, and you can use Bounding boxes to test if something is visible:
Also see How to check if an element is overlapping other elements?
$('[style*="overflow:hidden"],[style*="overflow: hidden;"]').children().each(function(index, element) {
var $el = $(element);
var $parent = $el.parent();
// get the bounding boxes.
var rect1 = $parent.get(0).getBoundingClientRect();
var rect2 = element.getBoundingClientRect();
// check for overlap(if it's visible)
if(!(rect1.right < rect2.left ||
rect1.left > rect2.right ||
rect1.bottom < rect2.top ||
rect1.top > rect2.bottom)) {
$el.removeClass('hidden');
}
else {
// it's hidden!
console.log('found hidden div '+$el.text());
$el.addClass("hidden");
}
});
<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
</head>
<body>
<div style="height:100px;overflow:hidden;background:red;border:2px dashed #000;">
<div>Ganesh</div>
<div>Om shankar</div>
<div>Sai</div>
<div>venkat</div>
<div>Sireesha</div>
<div>Sanjana</div>
<div>Giri</div>
<div>Santhosh</div>
</div>
</body>
</html>
You can check the height from the wrapper via javascript and then add a class to all the elements which are not fully visible inside the wrapper. Added a class wrap to the wrapper to make it more obvious.
var wrap = document.querySelector('.wrap');
var wrapHeight = wrap.offsetHeight; // just in case it's not known and set by CSS
wrap.querySelectorAll('div').forEach(function(element){
var elementBottomPosition = element.offsetTop + element.offsetHeight;
if(elementBottomPosition >= wrapHeight) {
element.classList.add('some-class');
}
});
.wrap {
height:100px;
overflow:hidden;
background:red;
border:2px dashed #000;
}
.some-class {
color: lime;
}
<div class="wrap">
<div>Ganesh</div>
<div>Om shankar</div>
<div>Sai</div>
<div>venkat</div>
<div>Sireesha</div>
<div>Sanjana</div>
<div>Giri</div>
<div>Santhosh</div>
</div>
Related
For my Website, I have a set background-color of the div class "coverbg", for example
cover{
background-color: #FFFFFF;
}
I also have a button defined in the .html-File (Let's say it has the ID "triggerbg"), and I want the Background-Color of the div to change (to for example #000000;) when the button is being hovered over with a mouse and change back when the mouse isn't on the button anymore. Is there a way to do this?
I also tried a code from stackoverflow, I tried replacing "body" with div class "cover" but it is not working,
var button = document.getElementById('hover');
var body = document.body;
button.onmouseover = function() {
body.className = 'hovered';
}
button.onmouseout = function() {
body.className = '';
}
body {
background: #000;
}
body.hovered {
background: #ff0;
}
<button id="hover">button</button>
Sorry, I am new to JS.
if you want to change the body background
modifying Ran Turner's post you get
function over(){
document.getElementsByTagName("BODY")[0].className = 'hovered';
}
function out(){
document.getElementsByTagName("BODY")[0].className = ' '
}
.hovered{
background:#000000;
}
<html>
<head></head>
<body>
<button onmouseover="over()" onmouseout="out()">hover</button>
</body>
</html>
or if you want a div
var trigger=document.getElementById("triggerbg");
var cover=document.getElementsByClassName("cover");
trigger.onmouseover=function(){
for (var i = cover.length-1; i >= 0; i--) {
cover[i].className="hovered";
}
cover=document.getElementsByClassName("hovered");
}
trigger.onmouseout=function(){
for (var i = cover.length-1; i >= 0; i--) {
cover[i].className="cover";
}
cover=document.getElementsByClassName("cover");
}
.cover{
background-color:yellow;
}
.hovered{
background-color:#000000;
}
<button id="triggerbg">hover</button>
<div class="cover">here</div>
<div class="cover">there</div>
<div class="cover">and</div>
<div class="cover">everywhere</div>
You also need to get the div element and on onmouseover/onmouseout events add/remove the class from that div respectively
var button = document.getElementById('hover');
var div = document.getElementById('your-div');
button.onmouseover = function() {
div.className = 'hovered';
}
button.onmouseout = function() {
div.className = '';
}
.hovered{
background-color: #000000;
}
<button id="hover">button</button>
<div id="your-div">
hover button to change color
</div>
In this Code, onmouseover and onmouseout event is used to change the class of div.
<html lang="en">
<head>
<title>Document</title>
<style>
/* hover class to change the background when hover on button */
.hover{
background-color:#aaaaaa
/* color=red */
}
</style>
</head>
<body>
<button id="hover" class="demo">button</button>
<div id='div' >Hover on button to see the effect on div</div>
<script>
let button = document.getElementById('hover');
let div = document.getElementById('div');
button.onmouseover = () =>{ // onmouseover event which executes when the mouse hover on element button
div.className ='hover'; // change the class name of div
}
button.onmouseout = () =>{
div.className ='';
}
</script>
</body>
</html>
Here is the code snippet you use to change the background of a button on the mouse hover.
In this Code, we use the hover property of a class that changes the background of a button when hover. You can use the style in your external CSS file or internal CSS in the HTML file in the tag.
<html lang="en">
<head>
<title>Document</title>
<style>
.demo:hover{
background-color: #FFFFFF;
}
</style>
</head>
<body>
<button id="hover" class="demo">button</button>
</body>
</html>
For example, i have <div id="titlebar"></div> inside html, and also i have <div class="name">Content-text</div> inside same html. Now i want pass Content-text of div class name (<div class="name">Content-text</div>) to another my id <div id="titlebar"></div> through css or js. i tried several ways, but no effect
And when i scroll up the html the id titlebar will show the text of class name
My html:
<html>
<body>
<div id="titlebar"></div>
<div class="name">Content-text</div>
</body>
</html>
Css:
#titlebar{
text-align:center;
width: 101%;
position: fixed;
top:0px;
margin-left:-10px;
padding-right:1px;
font-family: Times New Roman;
font-size: 16pt;
font-weight: normal;
color: white;
display:none;
border: none;
}
Javascript:
window.onscroll = function() {scrollFunction()};
function scrollFunction() {
if (document.body.scrollTop > 150 || document.documentElement.scrollTop > 150) {
document.getElementById("titlebar").style.display = "block";
} else {
document.getElementById("titlebar").style.display = "none";
}
}
Working Sample, jsFiddle
Please find it here.
<style>
#titlebar{
border: 1px solid black;
}
.name{
border: 1px solid red;
}
</style>
<div>
<div id="titlebar"></div>
<br/>
<div class="name">Content-text</div>
<button id='btn'>
Click to cpoy and put text inside titlebar
</button>
</div>
<script>
document.getElementById('btn').addEventListener('click', function() {
// Find your required code hre
let textInsideDivelementWithclass = document.getElementsByClassName('name')[0].innerText,
titlebarEle = document.getElementById('titlebar');
titlebarEle.innerText = textInsideDivelementWithclass;
});
</script>
<html>
<head>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script>
$(document).ready(function(){
$("button").click(function(){
var Content_text = $(".name").text();
$("#titlebar").text(Content_text);
});
});
</script>
</head>
<body>
<button>Copy</button>
<div class="name">Content-text</div>
<div id="titlebar">copy here</div>
</body>
</html>
First you get the text of your .name element:
let nameElement = document.querySelector(".name").textContent;
then you get the target element and assign the .name text to it :
document.querySelector("#titlebar").textContent = nameElement;
First of all you should determin an id for your div like this:
<div id="name">Content-text</div>
then use this code:
<script type="text/javascript">
var DivName = document.getElementById('name');
var DivTitlebar = document.getElementById('titlebar');
DivTitlebar.innerHTML = DivName.innerHTML;
</script>
Please try this..
You have to get the content from the div1 and div2 to two seperate variables div1Data and div2Data
Then from the HTML DOM innerHTML Property you can assign the content to your preferred div
function copyContent() {
var div1Data= document.getElementById('div1');
var div2Data= document.getElementById('div2');
div2Data.innerHTML = div1Data.innerHTML;
}
<div id="div1">
Content in div 1
</div>
<div id="div2">
</div>
<button onClick="copyContent()">Click to copy</button>
<html>
<head>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/jquery-mousewheel/3.1.13/jquery.mousewheel.min.js"></script>
<script>
$(document).ready(function(){
var Content_text = $(".name").text();
//alert(Content_text);
$(function() {
$(window).mousewheel(function(turn, scroll) {
if (scroll > 0) $('#titlebar').text('Content_text');
else $('#titlebar').text('Copy here');
return false;
});
});
//$("#titlebar").text(Content_text);
});
</script>
</head>
<body>
<div class="name" style="margin-top:50px;">Content-text</div>
<div id="titlebar" style="margin-top:50px;">Copy here</div>
</body>
</html>
<div class="blah">
<div id="hi">Hi</div>
<div id="hi2">
<p id="hi3">Hi3</p>
</div>
</div>
How to test with JavaScript if an element is child (or grandchild, or grandgrandchild, etc.) of an element of class blah? (said in another way : if an element is contained in an element of class blah).
Note: After some tests, .contains(...) seems not to be the solution.
Use matches:
elt.matches('.blah *')
See https://developer.mozilla.org/en-US/docs/Web/API/Element.matches. Check browser compatibility.
See also Test if a selector matches a given element.
Modernizr can help if the browser you are targeting requires a prefix:
var ms = Modernizr.prefixed("matchesSelector", HTMLElement.prototype, elt)
ms('.blah *')
See http://modernizr.com/docs/#prefixeddom.
Loop through parents, check each one.
function isContainedByClass(src,cls) {
while(src && src.tagName) {
if( src.classList.contains(cls)) return true;
// apply old-browser compatibility as needed
src = src.parentNode;
}
return false;
}
**check this out**
============================================================================
<!DOCTYPE html>
<html>
<head>
<style>
.a *
{
display: block;
border: 2px solid lightgrey;
color: lightgrey;
padding: 5px;
margin: 15px;
}
</style>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script>
$(document).ready(function(){
//for checking if span with class c1 is children of class a element
if($('.a').children('span.c1').length > 0) {
console.log("Found");
}
//for checking if span with class c1 has parent element with class a
if($('.c1').parents('.a').length > 0) {
console.log("Found");
}
});
</script>
</head>
<body>
<div class="a">a
<div class="b">b
<div class="b1">b1</div>
<div class="b2">b2</div>
<span class="b3">b3</span>
</div>
<div class="c">c</div>
<span class="c1">c1</span>
<p class="c2">c2</p>
</div>
</body>
</html>
I am attempting to toggle the height of all elements with class name on button click.
Here is what I am currently using. Right now it will work onClick the first time, but wont change back on second click. When I change if statement to something NOT true, the function still fires.
<head>
<script type="text/javascript">
function changeHeight() {
var elems = document.getElementsByClassName('div1');
for(var i = 0; i < elems.length; i++)
{
if (elems[i].style.height = '25px'){
elems[i].style.height = '110px';
}
else {
elems[i].style.height = '25px';
document.getElementById("expand").innerHTML="[+]";
}
</script>
<style type="text/css">
.div1 {
overflow:hidden;
height:25px;
}
</script>
</head>
<body>
<button type="button" id="expand" onClick="changeHeight();">[+]</button>
<div class="div1">
content
</div>
<div class="div1">
content
</div>
</body>
I believe the issue is I can not get my 'else' to fire because my if is not firing properly.
Any ideas?
Thanks
-Trevor
your if condition check is wrong, you need to use equality operator (==) and not assignment operator ( = ) in condition check, so change:
if (elems[i].style.height = '25px'){
..
to
if (elems[i].style.height == '25px'){ //use == not =
..
and yes the closing tag } of for loop is also missing, do:
for(var i = 0; i < elems.length; i++) {
if (elems[i].style.height == '25px'){
elems[i].style.height = '110px';
}
else {
elems[i].style.height = '25px';
document.getElementById("expand").innerHTML="[+]";
}
}
Use descendant selector for this kind of task. It's much easier.
http://jsfiddle.net/h7vGj/2/
<head>
<style type="text/css">
.div1 {
overflow:hidden;
height:25px;
}
.on .div1 {
height: 110px;
}
</style>
<script>
function foo(ele) {
if ( !ele.state ) {
document.body.className = "on";
ele.state = true;
}
else {
document.body.className = "";
ele.state = false;
}
};
</script>
</head>
<body>
<button type="button" id="expand" onclick="foo(this);">[+]</button>
<div class="div1">
content
</div>
<div class="div1">
content
</div>
</body>
PS. Your style tag is closed by script tag.
I want to do something like setting offsetHeight (offsetHeight is a read only property) - fit 3 div ("d1", "d2", "d3") into one container ("c"):
<!DOCTYPE HTML>
<html>
<body>
<style type="text/css">
.c {
background-color:#FF0000;
overflow:hidden;
}
.d {
left:10px;
border:9px solid black;
padding:13px;
margin:7px;
background-color:#FFFF00;
}
</style>
<div class="c" id="c">
<div id="d1" class="d">text text text</div>
<div id="d2" class="d">text text text</div>
<div id="d3" class="d">text text text</div>
</div>
<script type='text/javascript'>
var h=600;
var hd = Math.floor(h/3);
var c = document.getElementById("c");
var d1 = document.getElementById("d1");
var d2 = document.getElementById("d2");
var d3 = document.getElementById("d3");
c.style.height=h +"px";
d1.style.height=hd +"px";
var hd2 = (2 * hd - d1.offsetHeight) +"px";
d1.style.height=hd2;
d2.style.height=hd2;
d3.style.height=hd2;
</script>
</body>
</html>
but - first: the boxes doesn’t fit perfect :-( and secondly the style is bad. Do you have a idea how to fit the 3 div ("d1", "d2", "d3") into one container ("c")?
=> also I dont know how to read the css properties "padding" and "margin"
alert(d1.style.paddingTop);
doesn't work (maybe because it is defined by css-class and not direct)
Thank you :-)
Best regards Thomas
Which browser your using and what DOCTYPE you have determines the default box model for block elements. Usually, the default is content-box, which means that the padding, border, and margin all add to the height/width, so you'll need to factor that into your calculations if you have the box model as content-box.
Another options is, you can change the box model to border-box using the box-sizing CSS property. This means that the padding and border are included in the height and width, and only the margin adds to them. In my opinion, this box model is usually a more convenient one for doing what I want, so I usually end up switching.
Reference:
https://developer.mozilla.org/En/CSS/Box-sizing
https://developer.mozilla.org/en/CSS/box_model
After some testing I figure out this solution:
(works with: Opera, Firefox and Google Chrome)
(box-sizing: doesn't work on Firefox when used JavaScript?!)
<!DOCTYPE HTML>
<html>
<body>
<style type="text/css">
.c {
background-color:#FF0000;
overflow:hidden;
margin:0px;
padding:0px;
}
.d {
left:10px;
border:13px solid black;
padding:7px;
margin-bottom:13px;
margin-top:4px;
background-color:#FFFF00;
}
</style>
<div class="c" id="c">
<div id="d1" class="d">text text text</div>
<div id="d2" class="d">text text text</div>
<div id="d3" class="d">text text text</div>
</div>
<script type='text/javascript'>
///////////////////////////////////////////
// see: http://stackoverflow.com/questions/1601928/incrementing-the-css-padding-top-property-in-javascript
function getStyle(elem, name) {
if (elem.style[name]) {
return elem.style[name];
}
else if (elem.currentStyle) {
return elem.currentStyle[name];
}
else if (document.defaultView && document.defaultView.getComputedStyle) {
name = name.replace(/([A-Z])/g, "-$1");
name = name.toLowerCase();
s = document.defaultView.getComputedStyle(elem, "");
return s && s.getPropertyValue(name);
}
else {
return null;
}
}
///////////////////////////////////////////
var c = document.getElementById("c");
var d1 = document.getElementById("d1");
var d2 = document.getElementById("d2");
var d3 = document.getElementById("d3");
var paddingY = parseInt(getStyle(d1, 'paddingTop'),10) + parseInt(getStyle(d1, 'paddingBottom'), 10);
var marginTop = parseInt(getStyle(d1, 'marginTop'),10);
var marginBottom = parseInt(getStyle(d1, 'marginBottom'),10);
var marginMax = Math.max(marginTop, marginBottom);
var borderY = parseInt(getStyle(d1, 'borderTopWidth'),10) + parseInt(getStyle(d1, 'borderBottomWidth'), 10);
var h=600;
var count=3;
var hd = Math.floor((h-marginMax*(count-1) - marginTop - marginBottom - (paddingY + borderY) *count) / count) ;
c.style.height=h +"px";
d1.style.height=hd +"px";
d2.style.height=hd +"px";
d3.style.height=hd +"px";
</script>
</body>
</html>