Render Blocking css

Evening @aunpric;
you’ll probably need filamentgroup’s loadcss to ensure this works for browsers that don’t support rel=preload.

hope this helps,
frank

Evening

<link rel="preload" href="https://cdn.plyr.io/2.0.18/plyr.css" as="style" onload="this.rel='stylesheet'">
<noscript><link rel="stylesheet" href="https://cdn.plyr.io/2.0.18/plyr.css"></noscript>
<script>
/*! loadCSS rel=preload polyfill. [c]2017 Filament Group, Inc. MIT License */
(function(){ ... }());
</script>

This is right now using after you said about filamengroup load css when i put it every single page goen white nothing else am i Doing something wrong

Thanks for the reply

in there demo they added this whole script did i have to add it too

<script>
		/*! loadCSS. [c]2017 Filament Group, Inc. MIT License */
/* This file is meant as a standalone workflow for
- testing support for link[rel=preload]
- enabling async CSS loading in browsers that do not support rel=preload
- applying rel preload css once loaded, whether supported or not.
*/
(function( w ){
	"use strict";
	// rel=preload support test
	if( !w.loadCSS ){
		w.loadCSS = function(){};
	}
	// define on the loadCSS obj
	var rp = loadCSS.relpreload = {};
	// rel=preload feature support test
	// runs once and returns a function for compat purposes
	rp.support = (function(){
		var ret;
		try {
			ret = w.document.createElement( "link" ).relList.supports( "preload" );
		} catch (e) {
			ret = false;
		}
		return function(){
			return ret;
		};
	})();

	// if preload isn't supported, get an asynchronous load by using a non-matching media attribute
	// then change that media back to its intended value on load
	rp.bindMediaToggle = function( link ){
		// remember existing media attr for ultimate state, or default to 'all'
		var finalMedia = link.media || "all";

		function enableStylesheet(){
			link.media = finalMedia;
		}

		// bind load handlers to enable media
		if( link.addEventListener ){
			link.addEventListener( "load", enableStylesheet );
		} else if( link.attachEvent ){
			link.attachEvent( "onload", enableStylesheet );
		}

		// Set rel and non-applicable media type to start an async request
		// note: timeout allows this to happen async to let rendering continue in IE
		setTimeout(function(){
			link.rel = "stylesheet";
			link.media = "only x";
		});
		// also enable media after 3 seconds,
		// which will catch very old browsers (android 2.x, old firefox) that don't support onload on link
		setTimeout( enableStylesheet, 3000 );
	};

	// loop through link elements in DOM
	rp.poly = function(){
		// double check this to prevent external calls from running
		if( rp.support() ){
			return;
		}
		var links = w.document.getElementsByTagName( "link" );
		for( var i = 0; i < links.length; i++ ){
			var link = links[ i ];
			// qualify links to those with rel=preload and as=style attrs
			if( link.rel === "preload" && link.getAttribute( "as" ) === "style" && !link.getAttribute( "data-loadcss" ) ){
				// prevent rerunning on link
				link.setAttribute( "data-loadcss", true );
				// bind listeners to toggle media back
				rp.bindMediaToggle( link );
			}
		}
	};

	// if unsupported, run the polyfill
	if( !rp.support() ){
		// run once at least
		rp.poly();

		// rerun poly on an interval until onload
		var run = w.setInterval( rp.poly, 500 );
		if( w.addEventListener ){
			w.addEventListener( "load", function(){
				rp.poly();
				w.clearInterval( run );
			} );
		} else if( w.attachEvent ){
			w.attachEvent( "onload", function(){
				rp.poly();
				w.clearInterval( run );
			} );
		}
	}

	// commonjs
	if( typeof exports !== "undefined" ){
		exports.loadCSS = loadCSS;
	}
	else {
		w.loadCSS = loadCSS;
	}
}( typeof global !== "undefined" ? global : this ) );

		</script>

Sorry Im beginner at these things

if your page goes white that’s probably a PHP-errer, have a look at this page for info on how to best add JS to your site.

Well I check My cpanel for error it didnt show any

when i use only this

<link rel="preload" href="https://cdn.plyr.io/2.0.18/plyr.css" as="style" onload="this.rel='stylesheet'">
<noscript><link rel="stylesheet" href="https://cdn.plyr.io/2.0.18/plyr.css"></noscript>

I got no problem but when i add

<script>
/*! loadCSS rel=preload polyfill. [c]2017 Filament Group, Inc. MIT License */
(function(){ ... }());
</script>

This code it Show only a white

so where/ how do you add that JS?

Thanks For your time and reply

I figure it out it is because of lazy load Plugin

Long story to tell although Thankss