How can JavaScript be used for creating browser extensions with advanced capabilities?

Sep 12, 2023 ... Before we begin, make sure you have the following tools installed: An IDE of your choice. (You can get Visual Studio Code here.) Node ... May 15, 2022 ... In the very first article in this 5 part series about testing in JavaScript, we're going to look at what testing really is. It is built into most text editors and you can run ESLint as part of your continuous integration pipeline. ... dev community, we're proud to do our part and ... Can I use a JavaScript language variant, like Flow or TypeScript? What ... What you might do if you're clever. Add it to package.json { "name": "my-cool ... Apr 8, 2025 ... JavaScript has many built-in constructors for standard errors: Error , SyntaxError , ReferenceError , TypeError and others. We can use them to ... Dec 5, 2017 ... You can use it in a browser environment to make web “things” that are highly interactive. These could be web sites that respond better and are ... Jan 26, 2016 ... If you must use a global variable to store lots of data, make sure to null it or reassign it after you are done with it. One common cause for ... async and await are two keywords that can help make asynchronous code read more like synchronous code. ... json() returns a promise, we can use await to assign ... Jun 3, 2024 ... JavaScript only has one thread, and so it can only do one thing at a time. It can't multitask. This is a problem because if our lone JavaScript ... Aug 16, 2021 ... Event listeners make this possible as they let you separate the JavaScript from the HTML. You can also do this with onclick, but lets take ...