A simple program asks the user to give a string and then the program will reverse the given string and display the reverse string in the alert dialog box using JavaScript programming language.
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Program Listing<html><h2>Reverse a String in JavaScript</h2><style>body {font-family: arial;}</style><script type="text/javascript">function reverse_string(form) {var text = "";var str = document.getElementById( 'rev_string' ).value;for (i = 0; i <= str.length; i++)text = str.substring(i, i+1) + text;alert( "" + text);}</script><form><input type="text" size=40 id="rev_string"><br><br><input type="button" value="Reverse String" onClick="reverse_string(rev_string)"></form></html>
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