Vladimir Prelovac

The Yahoo! Exceptional Performance team recommends <a href="http://developer.yahoo.com/performance/rules.html#js_bottom" rel="nofollow ugc">placing scripts at the bottom of your page</a> because of the way browsers download components.
“The problem caused by scripts is that they block parallel downloads. The HTTP/1.1 specification suggests that browsers download no more than two components in parallel per hostname. If you serve your images from multiple hostnames, you can get more than two downloads to occur in parallel. While a script is downloading, however, the browser won’t start any other downloads, even on different hostnames.
In some situations it’s not easy to move scripts to the bottom. If, for example, the script uses document.write to insert part of the page’s content, it can’t be moved lower in the page. There might also be scoping issues. In many cases, there are ways to workaround these situations.”
WordPress default behavior is to load javascript in the page.
This plugin will move all javascript code to the footer if the plugins have <a href="http://www.prelovac.com/vladimir/best-practice-for-adding-javascript-code-to-wordpress-plugin" rel="nofollow ugc">declared javascript properly</a>.
Plugin by <a href="http://www.prelovac.com/vladimir" rel="nofollow ugc">Vladimir Prelovac</a>. Looking for <a href="http://www.prelovac.com/vladimir/services" rel="nofollow ugc">WordPress Services</a>?
<h3>License</h3>
This file is part of Footer JavaScript.
Footer JavaScript is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
Footer JavaScript is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with Footer JavaScript. If not, see <a href="http://www.gnu.org/licenses/" rel="nofollow ugc">http://www.gnu.org/licenses/</a>.

JavaScript to Footer

I used and face some of bad experience with it 

Can't give perfect result

This plugin automatically moves JavaScript code to page footer, speeding up page loading time.

Peter Raschendorfer

The Smart JavaScript Auto Loader Plugin allows you to load additional JavaScript files without the need to change files in the theme directory
<h3>Retired Plugin</h3>
Development, maintenance and support of this plugin has been retired in october 2023. You can use this plugin as long as is works for you.
There will be no more updates and I won’t answer any support questions. Thanks for your understanding.
Feel free to fork this plugin.
<h3>Usage</h3>
To load additional JavaScript files just put them into a directory named jsautoload. This directory can be placed in three different locations that are loaded in the following order:
<ul>
<li>Child Theme dependent (if using a Child Theme) : in the Child Theme’s directory</li>
<li>Theme dependent : in the Theme’s directory</li>
<li>Theme independent : in the wp-content directory</li>
</ul>
Only files with extension .js are added, all other files are ignored. Subdirectories can be used and will also be scanned. To ignore a complete directory (including all subdirectories) name the directory beginning with an underscore (_). The files are added in alphabetical order. Directories always are added after files.
To load one ore more JavaScript files at the end of your HTML file just place them into a directory named footer. To add the files to the footer of your theme it is required to call wp_footer() in your footer.php.
<h3>Plugin Privacy Information</h3>
<ul>
<li>This plugin does not set cookies</li>
<li>This plugin does not collect or store any data</li>
<li>This plugin does not send any data to external servers</li>
</ul>

Smart JavaScript Auto Loader

Really simple and good way to load additional JS, good job!



JavaScript to Footer vs Smart JavaScript Auto Loader