javascript 单选按钮 单击选中 双击取消选择实现代码

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> <title>单选按钮，双击取消选中</title> <script language="javascript" type="text/javascript"> window.onload = function() { // setRadio("myDiv", "form1", "alreadySelected"); var radios = document.getElementsByTagName("input"); for (var i = 0; i < radios.length; i++) { if (radios[i].type == "radio") { radios[i].ondblclick = function() { this.checked = false; } } } } </script> </head> <body> A:<input type="radio" name="rad" value="0" /> B:<input type="radio" name="rad" value="1" /> C:<input type="radio" name="rad" value="2" /> D:<input type="radio" name="rad" value="3" /> </body> </html>
[Ctrl+A 全选 注:如需引入外部Js需刷新才能执行]