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正则表达式验证邮箱

2013-04-23 17:59 274 查看
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<!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=utf-8" />
<title>正则表达式验证邮箱</title>
<script>
window.onload=function()
{
var oTxt=document.getElementById('txt');
var oBtn=document.getElementById('btn');

oBtn.onclick=function()
{
var reg=/^\w+@[a-z0-9]+\.[a-z]+$/i;

if(reg.test(oTxt.value))
{
alert('对');
}
else
{
alert('错');
}
};
};
</script>
</head>

<body>
<input type="txt" id="txt" />
<input type="button" value="验证" id="btn" />
</body>
</html>


<!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=utf-8" />
<title>正则表达式验证邮箱</title>
<script>
window.onload=function()
{
var oTxt=document.getElementById('txt');
var oBtn=document.getElementById('btn');

oBtn.onclick=function()
{
var reg=/^\w+@[a-z0-9]+\.[a-z]+$/i;

if(reg.test(oTxt.value))
{
alert('对');
}
else
{
alert('错');
}
};
};
</script>
</head>

<body>
<input type="txt" id="txt" />
<input type="button" value="验证" id="btn" />
</body>
</html>
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