jquery validate email

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 Validating an email.  
 -----------------------  
 Jquery:  
 $(‘#txtEmail’).blur(function(e) {  
       var sEmail = $(‘#txtEmail’).val();  
       if ($.trim(sEmail).length == 0) {  
         alert(‘Please enter valid email address’);  
         e.preventDefault();  
       }      
       var filter = /^([w-.]+)@(([[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}.)|(([w-]+.)+))([a-zA-Z]  
                {2,4}|[0-9]{1,3})(]?)$/;      
       if (filter.test(sEmail)) {  
         alert(‘Valid Email’);  
       }  
       else {  
         alert(‘Invalid Email’);  
         e.preventDefault();  
       }  
     });  
 In Source Code:  
 <asp:TextBox id=”txtEmail” runat=”server” />  

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