Why my email validation not accepting @ symbol using javascript in mvc 4

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Javascript

MVC4

Hello all,
I am totally new to Mvc 4. So I am creating a simple registration form.
To that form I want to apply java script validation.
While I am writing code for email validation i am getting error at @ symbol.
Can Any one help me....
This is my code..


function validateEmail()
{
var EmailVal = document.getElementById("Email").value;
var pattern =/^\w+([\.-]?\w+)@\w+([\.-]?\w+)*(\.\w{2,3})+$/;
debugger
var temp=pattern.test(EmailVal); // returns a boolean
if(!temp)
{
alert("Invalid Email");
return false
}

}

Here I am getting error at @ symbol..in regular expression.