How do I stop JavaScript from loading?
Press Control+Shift+P or Command+Shift+P (Mac) to open the Command Menu. Start typing javascript , select Disable JavaScript, and then press Enter to run the command. JavaScript is now disabled. The yellow warning icon next to Sources reminds you that JavaScript is disabled.
Can CSS load JavaScript?
In some cases external CSS files needed to be loaded “on demand” rather than including them in the initial HTML markup. In such cases you can use write Javascript code to load the file dynamically.
When do I need to defer loading JavaScripts?
When you do need one for a certain aspect that can be replaced with CSS (like visual effects) you should try to replace the effect or function the Javascript helps you with with CSS. When defer loading Javascripts you basically tell the browser to load the Javascripts after a web page (the DOM) has finished loading.
Is there a way to defer loading CSS files?
Unlike with CSS files there are HTML based methods for deferring and asynchronously loading Javascript files, namely script Defer and script Async. Unfortunately these HTML solutions do not work for CSS files. But do not worry, the below Javascript snippet comes to the rescue and will defer any CSS file you want:
What happens if you don’t put CSS on your website?
The first view your visitors (especially ones with slow internet connections or on mobile devices) may get of your website will either be a blank page or look horrible because your web pages will not be styled, simply because the CSS hasn’t been loaded yet. This is the reason defer loading all your CSS is not an option.
When to remove JavaScript from a web page?
When it comes to optimizing page speed, as a general rule you should aim to remove all Javascripts your web pages do not explicitly need to load. When you do need one for a certain aspect that can be replaced with CSS (like visual effects) you should try to replace the effect or function the Javascript helps you with with CSS.