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.

Russell Jamieson

diywebmastery

<ul>
<li>Footer Putter can create two widgets: a Footer Putter Copyright Widget and a Footer Putter Trademarks Widget</li>
<li>Include your site accreditations to demonstrate that your business meets the required standards for your industry</li>
<li>Create a footer that gives your site the credibility that it belongs to a real business</li>
<li>Include a footer menu with links to Contact, Privacy and Terms and Conditions Pages</li>
<li>Include a copyright statement that updates automatically when the year changes – an out of date copyright is a negative signal for Google</li>
<li>Include a telephone number to prove you are a real business</li>
<li>Include a postal address to prove you are a real business</li>
<li>Include a email address to prove you are a real business</li>
<li>Supports both a single line centred footer and a multi-line right aligned footer</li>
<li>The Footer hook setting allows you to add the footer in just the right place on themes that do not have suitable widget areas </li>
<li>Predefined classes tiny, small, light, dark and white make it easy to change footer size and color if required. </li>
<li>Can append company contact information to Privacy and Terms and Conditions pages.</li>
<li>Added widget visibility control: “show always”, “do not show on landing pages”, “only show on landing pages”.</li>
<li>Automatic HTML5 support</li>
<li>Option to use HTML5 microdata for Organization in accordance with Google recommendations</li>
<li>Option to apply rel=nofollow automatically to footer trademark links</li>
<li>Option to hide Powered By WordPress on TwentySomething themes</li>
<li>Supports various arrangements of footer menu, copyright and contact details over 1, 2 or 3 lines.</li>
</ul>
<h3>Links</h3>
Here are some of the useful Footer Putter WordPress Plugin links
<ul>
<li>Footer Putter Plugin: https://www.diywebmastery.com/plugins/footer-putter/</li>
<li>Compatible Themes and Hooks: https://www.diywebmastery.com/footer-credits-compatible-themes-and-hooks </li>
<li>How To Use A Different Footer On Landing Pages: https://www.diywebmastery.com/4098/how-to-add-a-different-footer-on-landing-pages</li>
<li>Using HTML5 Microdata for better SEO and Local Search: https://www.diywebmastery.com/4109/using-html5-microdata-footer</li>
</ul>

Footer Putter

Put a footer on your site that boosts your credibility with both search engines and human visitors.

JavaScript to Footer vs Footer Putter