display-featured-image-genesis/includes/js/settings-upload.js

jQuery(document).ready(function($){

	var custom_uploader;

	$('#upload_default_image').click(function(e) {

		e.preventDefault();

		//If the uploader object has already been created, reopen the dialog
		if (custom_uploader) {
			custom_uploader.open();
			return;
		}

		//Extend the wp.media object
		custom_uploader = wp.media.frames.file_frame = wp.media({
			title: ([objectL10n.text]),
			button: {
				text: ([objectL10n.text])
			},
			multiple: false
		});

		//When a file is selected, grab the URL and set it as the text field's value
		custom_uploader.on('select', function() {
			attachment = custom_uploader.state().get('selection').first().toJSON();
			$('#default_image_url').val(attachment.url);
		});

		//Open the uploader dialog
		custom_uploader.open();

	});

});