验证不正确时，输入形式的Javascript检查电子邮件地址仅在Safari中循环

Question

I have a form and the user needs to enter their e-mail address in one input box. I have a javascript function that is stored in an external file which is being loaded in the head of the html file.

I get a problem with Safari (6.0.5) when I enter a non-valid e-mail address. The Alert window pops up and when I click OK it just pops up over and over again. I never get the chance to enter a correct e-mail address.

This is how my function looks like:

   function validateEmail()
{
var x=document.forms["theForm"]["email"].value;
var atpos=x.indexOf("@");
var dotpos=x.lastIndexOf(".");
if (atpos<1 || dotpos<atpos+2 || dotpos+2>=x.length)
  {
  alert("Not a valid e-mail address");
  document.theForm.email.focus();
  return false;
  }
}

And I call this function with as seen below:

<input type="text" name="email" onblur="validateEmail();" /></td >

Answer 1

Use .removeFocus() then you dont have the problem anymore.

function validateEmail()
{
var x=document.forms["theForm"]["email"].value;
var atpos=x.indexOf("@");
var dotpos=x.lastIndexOf(".");
if (atpos<1 || dotpos<atpos+2 || dotpos+2>=x.length)
  {
  document.getElementById('alert_mail').innerHTML  = "Please change here";
  return false;
  }
    document.getElementById('alert_mail').innerHTML  = "";
}

EDIT: The return false; in this function has no effect, I assume the code you posted is not the whole code, anyway return false; is useful when you submit a form and you wan't to stop submitting if validation does not pass.

Answer 2

认为您在使用onblur的野生动物园中可能存在一个错误吗？