An example of this is when you use media queries, where you define different style rules for different kinds of screens (resolutions). As a web developer, the three main languages we use to build websites are HTML, CSS, and JavaScript. Together, we use these three languages to format, design, and program web pages. If you want to get started with JavaScript, you can check out freeCodeCamp’s JavaScript Algorithms and Data Structures certification. And you can use this great Intro to JS course to supplement your learning.

Shell scripts are a collection of commands for the shell, also known as the command line of an operating system. Shell scripts are typically used for file manipulations, program execution and text printing. This standardized version of JavaScript, called ECMAScript, behaves the same way in all applications that support the standard. Companies can use the open standard language to develop their implementation of JavaScript. The ECMAScript standard is documented in the ECMA-262 specification.

My First JavaScript

First up, we’ll start by looking at APIs from a high level — what are they, how do they work, how to use them in your code, and how are they structured? We’ll also take a look at what the different main classes of APIs are, and what kind of uses they have. JavaScript has also grown beyond being used just in the browser as well.

This is a good security measure — if this were not the case, then pirates could start writing code to steal information from other websites, and other such bad things. It’s also a great way to learn how to script using the Google what is scripting Home system. Some scripts are written in such a way that they require asynchronous loading, meaning that your website could load in a single second, but loading all of the scripts one after another may take several more seconds.

document.getElementById(«demo»).innerHTML = «Hello JavaScript!»;

Node.js is also lightweight enough to serve as a scalable tool for microservices, allowing you to develop a single app comprising small services with individual processes. For example, front-end JavaScript frameworks like jQuery and ReactJS improve design efficiency. They allow developers to reuse and update code components without affecting each other, function or value-wise. Each https://deveducation.com/ JavaScript framework has features that aim to simplify the development and debugging process. It works seamlessly alongside HTML and CSS, complementing CSS in formatting HTML elements while providing user interaction, a capability that CSS alone lacks. At this point, you should have a good idea of what APIs are, how they work, and what you can do with them in your JavaScript code.