js实现邮箱格式校验

<div style="float:left; width: 20%; height: 40px; margin-top: 12px">
   <strong style="float: right; margin-right: 20px">邮箱:</strong>
  </div>
  <div style="float:left;width: 50%; height: 40px;margin-top: 12px">
   <div>
          <input id="eMail" type="text" value="" placeholder="邮箱格式" class="form-control" οnblur="eMailCheck()"/>
         </div>
  </div>
  <div style="float:left; width: 15%; height: 40px; margin-top: 15px;">
   <label id="eMailMsg" style="float:left; color: red; font-size: 12px; margin-left:10px "></label>
  </div>

var RegEmail = /^([a-zA-Z0-9]+[_|\_|\.]?)*[a-zA-Z0-9]+@([a-zA-Z0-9]+[_|\_|\.]?)*[a-zA-Z0-9]+\.[a-zA-Z]{2,3}$/;

function eMailCheck(){
 var account = $("#eMail").val();
 if( account != "" && !RegEmail.test(account)) {
   $("#eMailMsg").html("邮箱格式不正确");
  }else {
   $("#eMailMsg").html("");
   }
 }