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Auto Grow a Textarea with JavaScript in CSS


Using JavaScript, we can set our Textarea element to automatically grow with its content

The following examples illustrate how we can achieve the above scenario.

Example

<!DOCTYPE html>
<html>
<head>
<style>
* {
   margin: 3%;
   color: navy;
   font-size: 1.2em;
}
#ta {
   padding: 2%;
   resize: none;
   width: 330px;
   min-height: 80px;
   overflow: hidden;
   box-sizing: border-box;
}
</style>
</head>
<body>
<form>
<label for="ta">Cool TextArea</label>
<textarea id="ta"></textarea>
</form>
<script src="https://code.jquery.com/jquery-3.5.1.min.js"></script>
<script>
$("#ta").on('input', function() {
   var scroll_height = $("#ta").get(0).scrollHeight;
   $("#ta").css('height', scroll_height + 'px');
});
</script>
</body>
</html>

Output

This will produce the following result −

Auto Grow a Textarea with JavaScript in CSS

Auto Grow a Textarea with JavaScript in CSS

Example

<!DOCTYPE html>
<html>
<head>
<style>
div {
   margin: 3%;
   overflow-y: scroll;
}
#ta {
   padding: 2%;
   resize: none;
   width: 333px;
   min-height: 90px;
   overflow: hidden;
   box-sizing: border-box;
   font-size: 1.5em;
}
</style>
</head>
<body>
<div>
<textarea id="ta"></textarea>
</div>
<script src="https://code.jquery.com/jquery-3.5.1.min.js"></script>
<script>
$("#ta").on('input', function() {
   var scroll_height = $("#ta").get(0).scrollHeight;
   $("#ta").css('height', scroll_height + 'px');
});
</script>
</body>
</html>

Output

This will produce the following result −

Auto Grow a Textarea with JavaScript in CSS