Question

28

Check for valid email before running remaining javascript

rated 0 times [ 34] [ 6] / answers: 1 / hits: 19960 / 13 Years ago, thu, june 30, 2011, 12:00:00

I have a textbox where the user is required to insert a valid email address.

When the user submits a valid email address a loading graphic appears while the data is posted back.

The code below works fine for showing the loading graphic but it does not check that the email address is valid first. Can anyone help out?

$('#btnEmail1Submit').live (click, function() {

   $('<div class=submitBg></div>').appendTo(.emailEditContainer);

   $('<div class=submitLoadingCont><img class=submitLoading src=images/mypreferences/loading.gif width=50 height=50 /></div>').appendTo(.emailEditContainer);

});

I am thinking that I need to put an if statement around the function that is run on click - so something like:

$('#btnEmail1Submit').live (click, function() {

  if(emailvalid == true) {   

    $('<div class=submitBg></div>').appendTo(.emailEditContainer);

    $('<div class=submitLoadingCont><img class=submitLoading src=images/mypreferences/loading.gif width=50 height=50 /></div>').appendTo(.emailEditContainer);

  }

});

I am using asp.net email validation - it looks something like this:

<asp:RegularExpressionValidator Display=Dynamic ValidationGroup=PrimarySubmit ID=RegularExpressionValidator1 runat=server ValidationExpression=w+([-+.']w+)*@w+([-.]w+)*.w+([-.]w+)* ControlToValidate=tbEmail1 ErrorMessage=Invalid email address -  />

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answered 13 Years ago donaldcristianl · Accepted Answer

You should check the email validity using a regexp

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,}))$/



$('#btnEmail1Submit').live (click, function() {

   if(!email.match(re)) {

     alert('invalid email');

     return false;

   }

   $('<div class=submitBg></div>').appendTo(.emailEditContainer);

   $('<div class=submitLoadingCont><img class=submitLoading src=images/mypreferences/loading.gif width=50 height=50 />    </div>').appendTo(.emailEditContainer);

});

The regexp comes from Validate email address in JavaScript?