understanding javascript fundamentals: your cheat sheet

JavaScript is executed once the information from HTML and CSS in the source code has been parsed and constructed..   JavaScript will then trigger any events or variables specified within it, Document Object Model will be updated, and, finally, JavaScript will be rendered in the browser..   HTML and CSS will often form the foundations of page's structure, and any JavaScript will make the final tweaks and alterations..   Document Object Model is created when page is loaded, and it's made up of nodes and objects.   Different editions of ECMAScript are released when the language is updated and tweaked over time, such as ES5 and ES6 ..   With regard to JavaScript rendering, transpiler is often recommended for transforming ES6 into ES5 because Google uses version of Chrome for rendering.   application is website or app that dynamically re-writes and re-renders page rather than making separate requests to the server for new HTML and content..   The server does the heavy lifting and renders the page so that JavaScript has already been processed and the content is ready to be handed over to the browser or search crawler when it's requested..   The server will handle the initial request, and the rest of the work of processing and rendering page falls on the device or the search engine..   when Googlebot is detected the page will be pre-rendered using mini client-side renderer, so the content can be seen and indexed straight away..   Read more