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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 107 | |
| 108 | $scripts->add( 'heartbeat', "/wp-includes/js/heartbeat$suffix.js", array('jquery'), false, 1 ); |
| 109 | did_action( 'init' ) && $scripts->localize( 'heartbeat', 'heartbeatSettings', |
| 110 | apply_filters( 'heartbeat_settings', array() ) |
| 111 | ); |
| 112 | |
| 113 | $scripts->add( 'wp-auth-check', "/wp-includes/js/wp-auth-check$suffix.js", array('heartbeat'), false, 1 ); |
| 114 | did_action( 'init' ) && $scripts->localize( 'wp-auth-check', 'authcheckL10n', array( |
| 115 | 'beforeunload' => __('Your session has expired. You can log in again from this page or go to the login page.'), |
| 116 | 'interval' => apply_filters( 'wp_auth_check_interval', 3 * MINUTE_IN_SECONDS ), |
| 117 | ) ); |
| 118 | |
| 119 | $scripts->add( 'wp-lists', "/wp-includes/js/wp-lists$suffix.js", array( 'wp-ajax-response', 'jquery-color' ), false, 1 ); |
| 120 | |
| 121 | // WordPress no longer uses or bundles Prototype or script.aculo.us. These are now pulled from an external source. |
| 122 | $scripts->add( 'prototype', '//ajax.googleapis.com/ajax/libs/prototype/1.7.1.0/prototype.js', array(), '1.7.1'); |
| 123 | $scripts->add( 'scriptaculous-root', '//ajax.googleapis.com/ajax/libs/scriptaculous/1.9.0/scriptaculous.js', array('prototype'), '1.9.0'); |
| 124 | $scripts->add( 'scriptaculous-builder', '//ajax.googleapis.com/ajax/libs/scriptaculous/1.9.0/builder.js', array('scriptaculous-root'), '1.9.0'); |
| 125 | $scripts->add( 'scriptaculous-dragdrop', '//ajax.googleapis.com/ajax/libs/scriptaculous/1.9.0/dragdrop.js', array('scriptaculous-builder', 'scriptaculous-effects'), '1.9.0'); |