<?php
function enqueue_javascript_for_certain_page() {

    $page_id = 100; // change this to fit your needs

    if ( is_page( $page_id ) ) { // check the page you are on

        wp_enqueue_script(
            \'my_script_name\', // script handle
            get_template_directory_uri() . \'/js/my-js-file.js\', // script URI
            array( // your script is dependent on following:
                \'jquery\',
                \'jquery-ui\'
            ),
            NULL, // script version (NULL means no version to display in query string)
            true // load script right before </body> tag
        );

    }

}

add_action( \'wp_enqueue_scripts\', \'enqueue_javascript_for_certain_page\' );

使用函数添加js文件。php

function add_theme_scripts() {
    wp_enqueue_script( \'script\', get_template_directory_uri() . \'/js/script.js\', array ( \'jquery\' ), 1.1, true);
}
add_action( \'wp_enqueue_scripts\', \'add_theme_scripts\' );

//if you want to add script in plugin use this code in plugin:
function yourScript() {
    wp_register_script( \'script\', plugins_url(\'js/jqueryfile.js\',__FILE__),array(\'jquery\'),\'1.1\', true );
    wp_enqueue_script(\'script\');
}
add_action( \'admin_enqueue_scripts\', yourScript);