A Super Small And Ultra-Efficient Library For Lazy Loading | defer.js

ūü•á defer.js is a very small and super-efficient library that helps you lazy download almost everything like images, video, audio, iframes, as well as style sheets and JavaScript.

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‚Ź≥ Simple Lazy Loading Of Non-Routable Angular Modules | ngx-loadable

How to make use of it:

Load the minified model of the defer.js library within the doc.

<script src="defer.min.js"></script>

Defer the loading of JavaScript inside the doc. In this instance, the goal script will look forward to 3 seconds to load after the web page is absolutely loaded.

// deferscript(src, id, delay, callback)
deferscript('target.js', 'target-id', 2000, function() {
  // do something
});

Defer the loading of CSS inside the doc.

// deferstyle(src, id, delay)
deferstyle('target.css', 'target-id', 2000);

Lazy load photographs inside the doc.

<img class="demo"
     data-src="target.jpg">
deferimg('demo', 100, 'loaded', function(img) {
  img.onload = function() {
    img.classList.add('show');
  }
});

Lazy load iframes inside the doc. Ideal for Youtube & Vimeo videos.

<iframe class="video"
        data-src="https://www.youtube.com/embed/VIDEO-ID"
>
</iframe>
deferiframe('video', 100, 'loaded', function(frame) {
  frame.onload = function() {
    frame.classList.add('show');
  }
});

Delay The Loading Of Anything, defer.js Plugin/Github


See Demo And Download

 

Official Website(shinsenter): Click Here

This superior jQuery/javascript plugin is developed by shinsenter. For extra Advanced Usages, please go to the official website.

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