Use the resize property to set whether the element is resizable by the user or not.
Example
You can try to run the following code to set whether or not an element is resizable by the user with JavaScript −
<!DOCTYPE html>
<html>
<head>
<style>
#box {
width: 350px;
overflow: auto;
background-color: orange;
border: 3px solid red;
}
</style>
</head>
<body>
<p>Click to set the right position.</p>
<button type = "button" onclick = "display()"> Set Right Position </button>
<div id = "box">
<p>This is a div. This is a div. This is a div. This is a div.<p>
<p>This is a div. This is a div. This is a div. This is a div.<p>
<p>This is a div. This is a div. This is a div. This is a div.<p>
</div>
<br>
<br>
<script>
function display() {
document.getElementById("box").style.resize = "both";
}
</script>
</body>
</html>