JavaScript Program to Replace Text Using Regular Expression

Write a JavaScript program to replace text using regular expression.

Source Code

<html>
<head>
    <title>Regular expression replace text</title>
    <script>
        function replace()
        {
            var txt=document.getElementById('txt').value
            var re = /ke/g
            document.getElementById('txt').value = txt.replace(re, "key")
        }
    </script>
</head>
<body>
Enter some text <textarea id="txt"></textarea>
<input type="button" value="Replace" onclick="replace()"/>
</body>
</html>

JavaScript Program to Replace Text Using Regular Expression

JavaScript Program to Replace Text Using Regular Expression

Source Code

Output