CriticalJS is a JavaScript library which enables you to improve the perceived performance of your site
CriticalJS is a JavaScript library which enables you to improve the perceived performance of your site. It does this by deferring the loading of your main JavaScript and catching any user interactions so that they can be later handled by the main JavaScript once it loads.
The simplest way to use CriticalJS is to include the critical.js file in your page and then specify a data attribute with the location of the main JavaScript that is to be defered.
<script src="criticaljs.min.js" data-deferredjs="main.js"></script>
We are currently targetting supporting Firefox, Android Browser, Chrome, Safari, Opera and Internet Explorer 9+.
We have put together a useful guide on how you can contribute to CriticalJS in the CONTRIBUTE.md file in this repo.
FAQs
CriticalJS is a JavaScript library which enables you to improve the perceived performance of your site
The npm package criticaljs receives a total of 0 weekly downloads. As such, criticaljs popularity was classified as not popular.
We found that criticaljs demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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