<!DOCTYPE html>
<html lang="en-US">
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script> <style>
div{
border:1px solid black;
width:100px;
height:50px;
margin: 10px;
}
</style>
</head>
<body>
<h1>jQuery width() Method</h1>
<div>Child 1</div>
<div>Child 2</div>
<p>Click on the button to change the first div's width to 100px and second div's width to 150px.</p>
<button>Click Me</button>
<script>
$(document).ready(function(){
$("button").click(function(){
$("div").width(function(index, myWidth){
$("div").eq(index).width(myWidth * (index+2));
});
});
});
</script> </body>
</html>