邮箱的验证：
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>email</title>
<script type="text/javascript">
window.onload=isEmail;
function isEmail(){
var getValue=document.getElementById("zh_e");
var getBtn=document.getElementById("btn");
var getReset=document.getElementById("reset");
var emial=/^([a-zA-Z0-9]+[_|/_|/.]?)*[a-zA-Z0-9]+@([a-zA-Z0-9]+[_|/_|/.]?)*[a-zA-Z0-9]+/;
getBtn.onclick=function(){
if(getValue.value==""||!(emial.test(getValue.value))){
alert("input!");
}
else{
alert("you are right!");
}
}
getReset.onclick=function(){ //
getValue.value=""; //
return false;
}
}
</script>
</head>
<body>
<input type="text" maxlength="32" id="zh_e" /><br />
<input type="button" name="btn" id="btn" value="btn" />
<input type="button" name="reset" id="reset" value="reset" />
</body>
</html>