核心提示：正则表达式之邮箱验证!DOCTYPE html PUBLIC -//W3C//DTD XHTML 1.0 Transitional//EN https://www.w3.org/TR/xhtml1/D...
正则表达式之邮箱验证
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="https://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<script>
window.onload=function(){
var oTxt=document.getElementById('txt1');
var oBtn=document.getElementById('btn1');
oBtn.onclick=function(){
//邮箱验证
var re=/^\w+@[a-z0-9]+\.[a-z]+$/i;
if(re.test(oTxt.value)){
alert('合法的邮箱');
}
else{
alert('邮箱不合法');
}
}
}
</script>
</head>
<body>
<input id="txt1" type="text" /></body>
<input type="button" value="验证" id="btn1" />
</body>
</html>
