http://www.quirksmode.org/dom/domform.html
I read the site, as mentioned above, and tried to implement it in my project. But it just doesn’t work when I click the “Get More Fields” button. Here is the code:
<%@page contentType="text/html" pageEncoding="UTF-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Test Form</title> <script type="text/javascript"> var counter = 0; function moreFields() { counter++; var newFields = document.getElementById("readroot").cloneNode(true); newFields.id = ''; newFields.style.display = 'block'; var newField = newFields.childNodes; for (var i=0;i<newField.length;i++) { var theName = newField[i].name; if (theName) newField[i].name = theName + counter; } var insertHere = document.getElementById("writeroot"); insertHere.parentNode.insertBefore(newFields,insertHere); } window.onload = moreFields; </script> </head> <body> <div id="readroot" style="display: none"> <input type="button" value="Remove review" onclick="this.parentNode.parentNode.removeChild(this.parentNode);" /><br /><br /> <input name="cd" value="title" /> <select name="rankingsel"> <option>Rating</option> <option value="excellent">Excellent</option> <option value="good">Good</option> <option value="ok">OK</option> <option value="poor">Poor</option> <option value="bad">Bad</option> </select><br /><br /> <textarea rows="5" cols="20" name="review">Short review</textarea> </div> <form method="post" action="/cgi-bin/show_params.cgi"> <span id="writeroot"></span> <input type="button" id="moreFields" value="Give me more fields!" /> <input type="submit" value="Send form" /> </form> </body> </html>
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