I know we can prevent overflow of child content using CSS overflow property.
But the overflow: scroll property is not preventing overflow.
let zoomInElem = document.getElementById('zoomIn')
let zoomOutElem = document.getElementById('zoomOut')
let contentElement = document.getElementById('content')
zoomInElem.addEventListener('click', function () {
console.log('zoomIn')
contentElement.style.zoom = '200%'
})
zoomOutElem.addEventListener('click', function () {
console.log('zoomOut')
contentElement.style.zoom = '100%'
})#main {
width: 640px;
height: 360px;
border: solid;
}
#content {
border: .1rem solid red;
overflow: scroll;
}
button {
margin: 1rem;
}<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Bootstrap demo</title>
<style>
</style>
</head>
<body>
<div>
<button id="zoomIn">ZoomIn</button>
<button id="zoomOut">ZoomOut</button>
</div>
<div id="main">
<div id="content">
<h1>Hi</h1>
<h2>Hi</h2>
<h3>Hi</h3>
<h4>Hi</h4>
</div>
</div>
<script>
</script>
</body>
</html>How can I prevent overflow on changing CSS zoom property by clicking ZoomIn button?
Try To Set overflow: scroll; on outer div
#main { position: relative;overflow: scroll;}
You can either define the width and height of #content, or set the overflow of #main to scroll.
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Bootstrap demo</title>
<style>
#main {
width: 640px;
height: 360px;
border: solid;
overflow: scroll;
}
#content {
/*width: 100%;
height: 100%; */
border: .1rem solid red;
/* overflow: scroll; */
}
button {
margin: 1rem;
}
</style>
</head>
<body>
<div>
<button id="zoomIn">ZoomIn</button>
<button id="zoomOut">ZoomOut</button>
</div>
<div id="main">
<div id="content">
<h1>Hi</h1>
<h2>Hi</h2>
<h3>Hi</h3>
<h4>Hi</h4>
</div>
</div>
<script>
let zoomInElem = document.getElementById('zoomIn')
let zoomOutElem = document.getElementById('zoomOut')
let contentElement = document.getElementById('content')
zoomInElem.addEventListener('click', function () {
contentElement.style.zoom = '200%'
})
zoomOutElem.addEventListener('click', function () {
contentElement.style.zoom = '100%'
})
</script>
</body>
</html>