how to do jquery function if wordpress metabox checkbox is checked Sync in add new post area -

in wordpress backend -> add new post area, how after metabox -> checkbox checked, example when checked category:

this the checkbox before checked:

<input value="1" type="checkbox" name="post_category[]" id="in-category-1"> 

this the checkbox after checked:

<input value="1" type="checkbox" name="post_category[]" id="in-category-1"> ::before </input> 

so, how detect checkbox checked , function after checked?

you can achieve using jquery.

!(function($){ $(document).ready(function(){     $('#categorychecklist').on('change', 'input[type=checkbox]', function(){         if ($(this).is(':checked'))             alert('category' + $(this).closest('label').text() + ' added.');         else             alert('category' + $(this).closest('label').text() + ' removed.');     }); }); })(window.jquery); 

/wp-content/themes/themename/js/post-jquery.js

i have category added or removed after being ticked or unticked (change event).

to attach jquery. check if current page adding/editing post get_current_screen() so.

<?php function add_script_to_post() {     $current_screen = get_current_screen();     if ( $current_screen->base == 'post' ) { // check if adding/editing post         wp_enqueue_script('post-jquery', get_stylesheet_directory_uri() . '/js/post-jquery.js');     } } add_action('current_screen', 'add_script_to_post'); ?> 

/wp-content/themes/themename/functions.php