正则表达式（邮箱验证）
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>邮箱验证</title>
</head>
<body>
<input type="text" id="txt1" /><br />
<input type="button" id="btn1" value="验证"/>
<script>
var oTxt1=document.getElementById(txt1);
var oBtn1=document.getElementById(btn1);
oBtn1.οnclick=function()
{
var re=/^w+@[a-z0-9]+.[a-z]+$/i;
if(re.test(oTxt1.value))
{
alert(邮箱合法);
}
else
{
alert(邮箱非法);
}
}
</script>
</body>
</html>
<html>
<head>
<meta charset="UTF-8">
<title>邮箱验证</title>
</head>
<body>
<input type="text" id="txt1" /><br />
<input type="button" id="btn1" value="验证"/>
<script>
var oTxt1=document.getElementById(txt1);
var oBtn1=document.getElementById(btn1);
oBtn1.οnclick=function()
{
var re=/^w+@[a-z0-9]+.[a-z]+$/i;
if(re.test(oTxt1.value))
{
alert(邮箱合法);
}
else
{
alert(邮箱非法);
}
}
</script>
</body>
</html>
