How to Defer Loading Large CSS Files for Optimized Website Performance?

Enhance CSS Delivery by Deferring Loading of Large CSS Files

Google's documentation for developers advises optimizing CSS delivery to improve website performance. One of the recommended strategies is inlining critical CSS in the head, while loading the original, larger CSS file after page onload.

Loading Large CSS Files After Page Onload

The provided example effectively handles the inlining of a small CSS file, but leaves questions about how to approach larger CSS files.

To defer loading of a large CSS file until after page onload, you can utilize code snippets like the following:

<code class="javascript">function loadStyleSheet(src) {
    if (document.createStyleSheet){
        document.createStyleSheet(src);
    }
    else {
        $("head").append($("<link rel="stylesheet" href="%22+src+%22%20/>%22));%0A%20%20%20%20%7D%0A%7D;

Simply%20invoke%20this%20function%20within%20your%20%24(document).ready()%20or%20window.onload%20function%20to%20achieve%20deferred%20loading%20for%20large%20CSS%20files.

Another%20alternative%20is%20to%20disable%20JavaScript%20in%20your%20browser%20and%20observe%20the%20resulting%20behavior.%20By%20doing%20so,%20you%20can%20verify%20that%20the%20CSS%20is%20loaded%20asynchronously,%20enhancing%20the%20overall%20website%20performance.

Remember,%20conducting%20a%20quick%20Google%20search%20can%20often%20provide%20valuable%20insights%20into%20programming%20challenges.%20For%20instance,%20the%20query%20%22post%20load%20css%22%20yields%20helpful%20results%20such%20as%20the%20one%20mentioned%20in%20the%20response.

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