jQuery val() Not Working

Hello,

I want to clear the content in my HTML input fields, that have the class name ‘gllr_image_video_url’.

The
document.write()
is only for testing.

document.write(jQuery(this))
Returns five objects of my input fields, but I can’t grab the values.

When I do this
document.write(jQuery(this).val())
The document.write never gets executed.

I’m just trying to set the value to nothing (below), if the value of the input is equal to that of a string, ‘Video URL’.

// Gallery input url focus
jQuery(document).ready(function() {
var url_input = jQuery('input.gllr_image_video_url');
	jQuery(url_input).each(function() {

		jQuery(this).focus(function(){
			document.write(jQuery(this).val());
			if (jQuery(this.val()) == 'Video URL'){
				jQuery(this.val()) = '';
			}
			else {
				//
			}

		});

	});
});

Any ideas why this isn’t happening?