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Monday, 21 April 2014

Expanding textarea width and height by default.


 Hi,

The below program will create a text area that dynamically resizes with the text the user enters in it.

Source code:


<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>Textarea dynamically increase </title>
    <style>
    textarea {
        overflow: hidden;
    }
    </style>
    <script>
    var te = document.querySelector('textarea');
    te.addEventListener('keydown', resizeTextarea);

    function resizeTextarea(ev) {
        this.style.height = '24px';
        this.style.height = this.scrollHeight + 12 + 'px';
    }
    </script>
</head>
<body>
    <textarea rows="3" cols="80"></textarea>
</body>
</html>


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