Javascript/jQuery if statement not working

I'm currently using the backstretch.js script for full screen background images, I've got it working but I would like to add an if statement to check if an image is set, which are set via custom post types display that image, if not, the default image should be link to image

This is what I have so far, but it doesn't work and need help fixing it:

<script src="<?php bloginfo('template_url'); ?>/js/jquery.backstretch.js"></script>
    <script>
      var link = $.backstretch("<?php echo get_post_meta($post->ID, 'upload_image', true); ?>")
      var altLink = '<?php bloginfo('template_url'); ?>/images/not-set-default.jpg'
        if (x == link) {
             document.write(link)
        } else {
             document.write(altLink)
        }

    </script>
LVL 1
VAN_ALAsked:
Who is Participating?
 
jjperezaguinagaConnect With a Mentor Commented:
Greetings VAN_AL,

I think your approach to solve the problem is not the right one. You are using $.backstretch(...) without checking the image, and the writing on the document the instance of the plugin.

A better approach would be the following one:
	<script src="<?php bloginfo('template_url'); ?>/js/jquery.backstretch.js"></script>
    <script>
	  <?php $image_link = get_post_meta($post->ID, 'upload_image', true); 
	  if (isset($image_link)) { ?>
		$.backstretch("<?=$image_link?>");
	  <?php } else { ?>
		$.backstretch("<?php bloginfo('template_url'); ?>/images/not-set-default.jpg");
	  <?php } ?>
    </script>

Open in new window


Hope it helps.
Best regards,
-JJ
0
 
Kyle HamiltonData ScientistCommented:
X is not defined anywhere...

Try:
if(link){
document.write(link)
}else
...
0
 
Gurvinder Pal SinghCommented:
make it

if ( x != undefined && link != undefined && x == link)
{
       document.write(link)
}
else
{
       document.write(altLink)
}
0
 
VAN_ALAuthor Commented:
No, sorry non of it worked for me
0
 
VAN_ALAuthor Commented:
Thanks @jjperezaguinaga, that worked.
0
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