电脑技术学习

用javascript的正则表达式来验证Email地址是否格式正确

dn001
;1// 检查 E-mail 是否已被注册
2;function CheckExists()
3;{
4;;;;;var e = document.getElementById("mailaddress").value;
5;;;;;if(e != "") {
6;if(!/(S)+[@]{1}(S)+[.]{1}(w)+/.test(e))
7;{
8;;;;;alert("请输入格式正确的 e-mail 地址!");
9;;;;;var email = document.getElementById ( "mailaddress" );
10;;;;;email.value = "";
11;;;;;email.focus ();
12;}
13;else
14;{
15;;;;;QuickRegisterBox.IsEMailExists(e, CheckExists_Callback);
16;}
17;;;;;}
18;}