Async JavaScript

Mô tả

Eliminate Render-blocking Javascript in above-the-fold content with Async Javascript.

Render-blocking Javascript prevents above-the-fold content on your page from being rendered until the javascript has finished loading. This can impact on your page speed and ultimately your ranking within search engines. It can also impact your user’s experience.

Async JavaScript gives you full control of which scripts to add an ‘async’ or ‘defer’ attribute to or to exclude to help increase the performance of your WordPress website.

Cài đặt

Installation is very straightforward:

  1. Upload the zip-file and unzip it in the /wp-content/plugins/ directory
  2. Activate the plugin through the ‘Plugins’ menu in WordPress
  3. Go to Settings > Async JavaScript menu to load settings page

Hỏi đáp

Which browsers support the ‘async’ and ‘defer’ attributes

The ‘async’ attribute is new in HTML5. It is supported by the following browsers:

  • Chrome
  • IE 10 and higher
  • Firefox 3.6 and higher
  • Safari
  • Opera
Where can I get help?

Async JavaScript is supported via the wordpress.org support forum.

Do you offer professional support/ configuration services?

We offer premium services for Async JavaScript and full web performance optimization services at https://autoptimize.com/

What about CSS?

As the name implies, Async JavaScript is built to enhance JavaScript loading only. Async JavaScript does not have any impact on CSS.

We recommend using the awesome Autoptimize plugin alongside Async JavaScript for CSS optimization.

I want out, how should I remove Async JavaScript?
  • Disable the plugin
  • Delete the plugin

Đánh giá

23 Tháng Tám, 2020
Installation Wizard works with GTmetrix and gives you a preview of the results of all the different settings. Very clear and easy. It shaved off a lot of seconds loading time. Well designed plugin that I'm going to be using on all my websites from here on!
28 Tháng Bảy, 2020
The plugin does what it's supposed to do. I had an inquiry about me GTmetrix results still being slow, but concluded that this must be due to my adsense auto-ads, and not the plugin underperforming. The support answered my question within minutes!
17 Tháng Sáu, 2020
thanks, iam happy that the plugin works correctly with my setup!
2 Tháng Sáu, 2020
Great plugin that has really helped to boost my site speed. Its also pretty easy to use.
1 Tháng Sáu, 2020
It works nice, does what need to do. I recommend it.
Đọc tất cả 80 đánh giá

Người đóng góp & Lập trình viên

“Async JavaScript” là mã nguồn mở. Những người sau đã đóng góp vào plugin này.

Những người đóng góp

“Async JavaScript” đã được dịch qua 3 ngôn ngữ. Cảm ơn những người tham gia dịch vì đóng góp của họ.

Dịch “Async JavaScript” sang ngôn ngữ của bạn.

Muốn tham gia phát triển?

Duyệt code, check out SVN repository, hoặc theo dõi nhật ký phát triển qua RSS.

Nhật ký thay đổi

2.20.03.01

  • extra security measure; check the nonce when saving settings/ going through wizard.
  • wizard: if something fails then communicate this onscreen instead of on the console.
  • autoptimize integration: change copy to explain this might or might not be helpful.

2.20.02.27

  • fix for some nasty issues, thanks for the heads-up Mikey

2.19.07.14

  • add asyncjs_filter_noptimize filter
  • changed textdomain to match slug as suggested by Eneko Garrido
  • confirmed working with WordPress 5.2

2.18.12.10

  • the “happy birthday to me” edition 😉
  • new: added option to disable Async JS for logged in users
  • new: added option to disable Async JS on shop cart/ checkout pages (woocommerce, edd & wp ecommerce)
  • added ‘settings’-link to plugin overview screen (hi Mike!)
  • updated the chosen JS library to 1.8.7
  • confirmed working with WordPress 5.0

2.18.06.13

  • fix integration issue with Autoptimize, thx for reporting ElephantDude!

2.18.05.24

  • don’t async (or defer) on AMP-pages
  • disable async/ defer by when ?aj_noptimize=1 is part of the URL

2.18.04.23

  • Re-arrange content on the different tabs of the settings page.
  • Continued refactoring of backend code, no functionality should be affected.
  • Remove all images from the project such as the animated hands and progress bar gif.
  • Remove empty rows that added unnecessary space.
  • Switch buttons to use WordPress button styles.
  • Fix broken Dashboard Widget from 2.18.03.15 and reduce font-size to fix text overflow.
  • Remove all CSS !important declarations for easier CSS styling.
  • Remove inline CSS styles.
  • Switch to a CSS based progress bar.
  • Spell check readme.
  • Remove almost all tables from files.
  • Refactor JavaScript.
  • Add wormeyman as a contributor (thanks man!).

2.18.03.15

  • bugfix: only load asyncjs’ JS & CSS on own settings page as reported by Marat Petrov
  • bugfix: check if jQuery chosen is correctly loaded before using it (based on same report, thanks Marat!)
  • update jQuery Chosen lib
  • small readme tweaks

2.18.03.10

  • ASync JS is now maintained by Frank Goossens (Optimizing Matters), thanks for the great job done David!
  • Moved all Pro features into the standard version.
  • Some code refactoring
  • Made strings ready for translations

2.17.11.15

  • MOD: Added User Agent to GTMetrix requests

2.17.11.03

  • MOD: Check for GTMetrix class existence prior to including class

2.17.10.18

  • FIX: Issue converting array for plugin & theme exclusions

2.17.09.30

  • FIX: Sanitise all $_GET and all $_POST
  • FIX: Add nonce to ajax calls

2.17.06.13

  • MOD: Dashboard Widget and Notices only available to Administrators

2.17.05.08

  • NEW: Added quick settings buttons to allow common settings to be quickly applied
  • NEW: Added current version info to help page

2.17.05.07

  • FIX: Some installs not saving plugin/theme exclusions due to theme incompatibility

2.17.05.06

  • MOD/FIX: On some WordPress installs is_plugin_active function being called too early. Moved is_plugin_active into a dedicated function called via admin_init as per codex: https://codex.wordpress.org/Function_Reference/is_plugin_active

2.17.05.05

  • FIX: Incorrect textarea identifier preventing exclusion save

2.17.05.04

  • FIX: Resolve early loading of plugin causing a fatal error due to function not available yet
  • FIX: CSS / JS not loading

2.17.05.03

  • MOD: Add text to advise running Wizard is not mandatory

2.17.05.01

  • massive Massive MASSIVE rewrite of Async JavaScript!!!
  • Now includes a Setup Wizard, Status page, Settings page and a help page.
  • Communicates directly with GTmetrix (account required)
  • Automatically transfers existing settings from Async JavaScript to Async JavaScript