Two things- When you enqueue a script, WordPress inserts the script tag in the call to wp_head(), so step one is to remove the script tag from your header. The second thing is the jQuery supplied with WordPress is in no conflict mode by default, so you should reference the jQuery object with jQuery rather … Read more
One point for using wp_enqueue_script is for that very reason. Never assume anything, enqueue jQuery so that if it is there already it does nothing, but if not , it will queue it up. If your talking about the image path for your plugin, you can use the following, http://codex.wordpress.org/Determining_Plugin_and_Content_Directories The examples for plugins_url should … Read more
First of all – I’m not sure why you are registering jquery-ui-core. WordPress has already registered jQuery UI scripts (see here). You should use the shipped jquery and jquery-ui scripts rather than registering your own. As for the error – the second argument add_action (and apply_filter for that matter) is a callback. To have a … Read more
Because that is the signature of that particular function. If you don’t like it, you can always use a wrapper function like the one below. function wpse61783_enqueue_script( $handle, $src ) { wp_enqueue_script( $handle, $src, array(), ”, true ); }
If you want to send the url of the website, or other server side calculated values, to JavaScript you can use wp_localize_script (Codex Page). This function creates an object, with the values you’ve passed. As the documentation states, you’ve got to include your script with wp_enqueue_script, else it doesn’t call localize_script. Also make sure to … Read more
if you want it on all single posts as well as pages & custom post types, use is_singular() instead of is_single() & just in case you’re using it on the template, this code goes in functions.php UPDATE IN RESPONSE TO THE COMMENTS write this code just above your wp_head() function in header.php global $wp_scripts; var_dump($wp_scripts); … Read more
You only register your first script, but don’t enqueue it. Change wp_register_script to wp_enqueue_script and it should work. Registering it is useful if you may possibly enqueue it at different times/conditions, but in this case you can just enqueue it straight away.
The problem is the de-registering the core-bundled version of jQuery, and re-registering using your own, arbitrary version. Do not de-register core-bundled versions of scripts (especially jQuery) in order to register arbitrary/custom versions of those scripts. Doing so can and will cause breakage and unintended consequences. If you’re doing so in order to cause your custom … Read more
You could use anonymous functions in PHP 5.3+ to do this. <?php function addThemeJS($enqueueThemeJS, $handle, $src, $deps, $ver, $in_footer) { add_action(‘wp_enqueue_scripts’, function() use ($handle, $src, $deps, $ver, $in_footer) { wp_enqueue_script($handle, $src, $deps, $ver, $in_footer); }); } If you’re using this a personal project where you know the server has 5.3+ you would be okay if … Read more
For the admin side, the two actions you want are admin_enqueue_scripts and admin_head-(plugin_page). wp_enqueue_scripts and wp_head are only for the front end.