email validator

email_validator

function validateEmail(){
  //testing regular expression
  var a = $("#email").val();
  // explination of symbols at: http://www.zparacha.com/validate-email-address-using-javascript-regular-expression/
  var filter = /^[a-zA-Z0-9]+[a-zA-Z0-9_.-]+[a-zA-Z0-9_-]+@[a-zA-Z0-9]+[a-zA-Z0-9.-]+[a-zA-Z0-9]+.[a-z]{2,4}$/;
  //if it's valid email
  if(filter.test(a)){ //The test() method tests for a match in a string.

    return true;
  }
  //if it's NOT valid
  else{

    return false;
  }
}