[JavaScript] 邮箱验证

1.JQuery

        $(function(){
            $("#username").blur(function(){
            var temp=$("#username");
            var myreg = /^[a-zA-Z0-9_.-]+@[a-zA-Z0-9-]+(\.[a-zA-Z0-9-]+)*\.[a-zA-Z0-9]{2,6}$/;
             if(!myreg.test(temp.value)){
               alert('提示\n\n请输入有效的Email!');
               //myreg.focus();
               return false;}
            });
    }

2.JavaScript

function validateEmail(email) {
  var re = /^(([^<>()[\]\\.,;:\s@\"]+(\.[^<>()[\]\\.,;:\s@\"]+)*)|(\".+\"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;
  return re.test(email);
}

function validate() {
  var $result = $("#result");
  var email = $("#username").val();
  $result.text("");

  if (validateEmail(email)) {
    $result.text(email + " is valid :)");
  } else {
    $result.text(email + " is not valid :(");
  }
  return false;
}

$("#login").bind("click", validate);