and then does the work of finding where lazy loading can best be ... islands are your interactive, JavaScript-dependant components, surrounded by pure HTML/CSS markup. By carving up the app ...

jsFiddle is the perfect solution; it provides a custom environment (based on user selections) to test (or fiddle with) your JavaScript, HTML, and CSS code ... is as simple as loading the site ...

As such, a modern webpage is typically made up of three separate entities: a cascading style sheet, a JavaScript file and the HTML file itself. The cascading nature of CSS files is attributed to the ...