JavaScript

JavaScript is a lightweight scripting language used by developers. It enables web designers to make websites more interactive. Rather than being hosted on your web server, JavaScript runs through the end user’s browser (which means it’s referred to as a client-side script). This speeds up your page by avoiding round-trips to and from the server for every little change. Most websites have at least a few JavaScript elements, but be careful not to use too many as it can slow down your website.