Javascript验证输入信息

function CheckData()
2 {
3 if(document.addAdminForm.txtAccount.value == "")
4 {
5 alert("用户名不能为空！");
6 return false;
7 }
8 if(document.addAdminForm.txtPass1.value == "")
9 {
10 alert("密码不能为空！");
11 return false;
12 }
13 if(document.addAdminForm.txtPass2.value == "")
14 {
15 alert("密码确认不能为空！");
16 return false;
17 }
18 if(document.addAdminForm.txtPass1.value != document.addAdminForm.txtPass2.value)
19 {
20 alert("两次密码输入不一致");
21 return false;
22 }
23
24 //检查邮箱地址
25 if(document.addAdminForm.txtEmail.value != "")
26 {
27 var reg = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+((\.[a-zA-Z0-9_-]{2,3}){1,2})$/;
28 if(!reg.test(document.addAdminForm.txtEmail.value))
29 {
30 alert("Email格式不正确！");
31 return false;
32 }
33 return true;
34 }
35 }