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Inline JavaScript in Head

Descrição

CAUTION: This plugin is now deprecated! The successor plugin is Embed JavaScript File Content. The new plugin is rebuild from scratch and more rock solid: It respects order and position of scripts and extra scripts added via wp_add_inline_script or wp_localize_script don’t get lost. Give it a try!

In some cases you cannot wait for a JavaScript file to load, even if it is placed early in the <head> section of your template. You can benefit from better performance, if you place the JavaScript code directly inside a <script> tag into the header. This is where this plugin comes in: It provides a filter inline_javascript_in_head_handles, which takes JavaScript handles, dequeues those scripts and echos their code content inline into the head section instead of linking them via a script tag.

Please beware that placing lots of JavaScript code inline in the <head> section can be critical! First you lose caching benefits and second the document size can increase easily. A general rule of thumb is that you should only consider JavaScript files for inline placement, which are critical and which have a file size lower than ~500 Bytes.

Example

add_action( 'wp_enqueue_scripts', 'my_scripts' );
function my_scripts() {
    // Some critical script is enqueued
    wp_enqueue_script( 'js-detection', get_template_directory_uri() . '/js/js-detection.js' );
}

/**
 * Define JavaScript handles to be echoed inline in the html head section.
 */
add_filter( 'inline_javascript_in_head_handles', 'my_inline_javascript_in_head_handles', -20 );
function my_inline_javascript_in_head_handles( $handles ) {
    $scripts = [ 'js-detection' ];

    return array_merge( $handles, $scripts );
}

Instalação

  1. Upload inline-javascript-in-head.zip to the /wp-content/plugins/ directory.
  2. Activate the plugin through the ‘Plugins’ menu in WordPress.
  3. Use the inline_javascript_in_head_handles filter in your theme or plugin.
  4. You’re done!

Avaliações

23 de janeiro de 2020 1 reply
Slowed down the website and deactivating the plugin appears not to reverse the moving of the javascript to the head. Complete restore of website to resolve.
Leia 1 avaliação

Colaboradores e desenvolvedores

“Inline JavaScript in Head” é um software com código aberto. As seguintes pessoas contribuíram para este plugin.

Colaboradores

Registro de alterações

1.2.0

  • CAUTION: Last update! This plugin is now deprecated (see description section)
  • Bugfix: Some scripts could have gotten lost under certain conditions.

1.1.2

  • readme.txt code appearance screwed up, now hopefully fixed.

1.1.1

  • readme.txt update

1.1

  • Added filter inline_javascript_in_head_wrap_try_catch, which can add add a try catch wrapper around the JavaScript code.

1.0

  • First release