邮箱格式的验证（正则表达式）

正则表达式：^\w+((-\w+)|(\.\w+))*\@[0-9a-zA-Z]+((-|\.)[0-9a-zA-Z]+)*\.[0-9a-zA-Z]+$


JavaScript：

<SCRIPT LANGUAGE=javascript RUNAT=Server>
function isEmail(strEmail) {
if (strEmail.search(/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/) != -1)
return true;
else
alert("oh");
}
</SCRIPT>
<input type=text onblur=isEmail(this.value)>



javascript验证邮箱格式代码

<script language='javascript'>
function chkMail(){
if(document.form1.email.value=''){
alert("请填写邮箱地址!");
document.form1.email.focus();
return false;
}
//开始验证
var email = document.form1.email.value;
var pattern = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/;
chkFlag = pattern.test(email);
if(chkFlag){
return true;
}
else
{
alert("邮箱地址的格式不正确！");
document.form1.email.focus();
return false;
}
}
</script>
~~~~~~~~~~~~~~~~~~~~~~~完毕！

最简单的就一句：

if(!/^\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$/.test('email'))
{
alert('email不正确');
}

----------------------------------------------------------------------------------------------------------------------------

js:function isEmail(email)
{
invalidChars = " /;,:{}[]|*%$#!()`<>?";
if (email == "")
{
return false;
}
for (i=0; i< invalidChars.length; i++)
{
badChar = invalidChars.charAt(i)
if (email.indexOf(badChar,0) > -1) {
return false;
}
}
atPos = email.indexOf("@",1)
if (atPos == -1) {   return false; }
if (email.indexOf("@", atPos+1) != -1) {   return false; }
periodPos = email.indexOf(".",atPos)
if(periodPos == -1) {
return false; // and at least one "." after the "@"
}
if ( atPos +2 > periodPos) {
return false; // and at least one character between "@" and "."
}
if ( periodPos +3 > email.length) {   return false; }
return true;
}

评论

1 楼 蓝沙 2011-09-20  

楼主，在MVC3.0中对@符号有特殊作用的，在JS代码中，出现@就会报错，请问怎么解决？