function init() {
(function(d, s, id) {
var js, fjs = d.getElementsByTagName(s)[0];
if (d.getElementById(id)) return;
js = d.createElement(s); js.id = id;
js.async = true;
js.src = "//connect.facebook.net/en_US/sdk.js#xfbml=1&version=v2.9&appId=1111";
fjs.parentNode.insertBefore(js, fjs);
}(document, 'script', 'facebook-jssdk'))
}
window.onload = init;
Despite the fact that I am calling facebook comments plugin on load still i am getting a minus score on web-vitals as its part of Main-Thread Blocking Time .
You should use a Web Worker to load the facebook_comments
plugin.
Web Workers are a simple means for web content to run scripts in background threads.
Here's an example:
facebook_comments.js
:
function init() {
(function(d, s, id) {
var js, fjs = d.getElementsByTagName(s)[0];
if (d.getElementById(id)) return;
js = d.createElement(s); js.id = id;
js.async = true;
js.src = "//connect.facebook.net/en_US/sdk.js#xfbml=1&version=v2.9&appId=1111";
fjs.parentNode.insertBefore(js, fjs);
}(document, 'script', 'facebook-jssdk'))
}
and then load it via the web worker:
new Worker('facebook_comments.js');
That should load the script in a background thread, resulting to an optimized TBT.
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