BoostR

a javascript utility for preconnect, preload and prerender, that helps you speed up your website's experience

Features

• Lightweight (2,4kb)
• Dependency free
• Very easy to use
• Native support for timed pre-rendering, -fetching & -connecting
• Native support for mobile breakpoints

Usage

include boostr.min.js

<script src="your-js-dir/boostr.min.js"></script>

start up BoostR

<script>
    var boostr = new boostr();
    boostr.start();
</script>

this will create a new BoostR instance with default settings:

option	descrition	default
preConnectDelay	delay before preconnect elements are added to dom	0
preConnectWidth	min device width for preconnecting	0
preConnectAttr	html attribute for preconnect links	'data-preconnect'
preConnectAll	creates preconnects for each href in the dom	true
preFetchDelay	delay before prefetch elements are added to dom	1000
preFetchWidth	min device width for prefetching	1024
preFetchAttr	html attribute for prefetch links	'data-prefetch'
preRenderDelay	delay before prerender elements are added to dom	3000
preRenderWidth	min device width for prerendering	1024
preRenderAttr	html attribute for prerender links	'data-prerender'

you can load BoostR with your custom settings, by passing them on initialization:

<script>
    var boostr = new boostr({
        preConnectAll: false,
        preFetchDelay: 0,
        preRenderDelay: 5000,
    });
    boostr.start();
</script>

you can even manually trigger booster with javascript like this:

<script>
    var boostr = new boostr();
    boostr.start();
    boostr.preConnect('http://domain-c.com');
    boostr.preFetch('http://domain-x.com/img.png');
    boostr.preRender('http://domain-a.com');
    boostr.preRender('http://domain-d.com');
</script>

License

Copyright (c) 2015 "schliflo" Florian Schlittenbauer

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.