如何检查有效的电子邮件ID
问题描述：
如何检查电子邮件ID是否有效?
how to check whether email id is valid?
答
请参阅以下内容:
电子邮件ID验证 [有效电子邮件地址验证 [
Refer to this:
Email ID Validation[^]
Effective Email Address Validation[^]
使用正则表达式验证器
Use regular expression validator
<asp:RegularExpressionValidator ID="regexEmailValid" runat="server" ValidationExpression="\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*" ControlToValidate="tbEmail" ErrorMessage="Invalid Email Format"></asp:RegularExpressionValidator>
tbEmail是需要验证的文本框.
参见
http://regexlib.com/DisplayPatterns. aspx [ ^ ]
tbEmail is textBox that need to validate.
See
http://regexlib.com/DisplayPatterns.aspx[^]
功能validate(form_id，email){
var reg =/^([[A-Za-z0-9 _ \-\.])+ \ @([A-Za-z0-9 _ \-\.])+ \.([A-Za-z] { 2,4})
function validate(form_id,email) {
var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})