Ajax Php Conditional Logic Not Evaluating Correctly

For some reason my ajax.responseTest coming from my PHP will not evaluate correctly in the javascript conditional code I have below. The ajax.responseTest is coming back as 'signup

Solution 1:

Assuming that the reference PHP code is posted correctly, you have has leading whitespace in your script:

<?php
^^^^

And the output would be:

    signup_success

Try removing unnecessary whitespace from your script or trim the responseText:

if(ajax.responseText.replace(/^\s+|\s+$/g, "") == "signup_success") ...