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Online Code Editor
<html> <body> <script type="text/javascript" > function showcommentform() { var data="Name:<br><input type='text' name='name'><br>Comment:<br><textarea rows='5' cols='50'></textarea><br><input type='submit' value='comment'>"; document.getElementById('mylocation').innerHTML=data; } </script> <form name="myForm"> <input type="button" value="comment" onclick="showcommentform()"> <div id="mylocation"></div> </form> </body> </html>