Implementation details of javascript radio list (compatible with multiple browsers)_form effects

Supports direction keys
When the last radio is selected, pressing the keypad will automatically jump back to the first one
Checked can automatically trigger onclick
Supports various browsers, cross-browser

<title>Rank's HTML document</title> <meta http-equiv="Content-Type" content="text/html; charset=gb2312"> <meta http-equiv="Pragma" content="no-cache"> <meta http-equiv="Cache-Control" content="no-cache"> <meta http-equiv="Expires" content="0"> <meta http-equiv="ImageToolbar" content="no"> <meta http-equiv="Creator.name" content="Rank, BlueDestiny, never-online"> <style type="text/css" title="default" media="screen"> /*<![CDATA[*/ body { font:13px/1.5 arial; } /*]]>*/ </style> <h1>The wonderful use of radio list</h1> <ol> <li>Can support direction keys</li> <li>When the last radio is selected, pressing the keypad will automatically jump back to the first one </li> <li>checked can automatically trigger onclick</li> <li>Supports various browsers, cross-browser</li> </ol> <h2>demo</h2> <p id="wrap"> <input name="radio_n" type="radio"><input name="radio_n" type="radio"><input name="radio_n" type="radio"><span id="ad"></span> </p>