在js中实现邮箱格式的验证方法
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>在此处插入标题</title>
<script type="text/javascript">
//判断用户输入的电子邮箱格式是否正确
function checkEmail（）{
var myforms=document.forms;
var myemail=myforms.email.value;
var myReg=/^+@（+\.）+（com|cn|net|org）$/;
if（myReg.test（myemail））{
return true;
}else{
myspan.innerText="邮箱格式不对！";
return false;
}
}
</script>
</head>
<body>
<form action="#">
<table>
<tr><td>邮箱：<input type="text" id=email></td><td><span id=myspan style="text-size:18pt;color:red;"></span></td></tr>
<tr><td><input type="submit" value="提交" onclick="return checkEmail（）"/></td><td></td></tr>
function isEmail（email） {
return /^（（（|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]）+（\.（|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]）+）*）|（（\x22）（（（（\x20|\x09）*（\x0d\x0a））？（\x20|\x09）+）？（（[\x01-\x08\x0b\x0c\x0e-\x1f\x7f]|\x21|[\x23-\x5b]|[\x5d-\x7e]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]）|（\\（[\x01-\x09\x0b\x0c\x0d-\x7f]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]））））*（（（\x20|\x09）*（\x0d\x0a））？（\x20|\x09）+）？（\x22）））@（（（|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]）|（（|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]）（|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]）*（|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]）））\.）+（（|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]）|（（|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]）（|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]）*（|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]）））$/i.test（emailwww.9ask.cn/shangqiu/）；
}
</table>
</form>
</body>
</html>
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