The first operand is the tested value and the second one is the value to be used in case the first one is falsy: const config = options || from './utils' The OR operator is widely used to set the default value of an expression in JavaScript. ECMAScript 2020 makes it easier to access this object by providing a globalThis variable: // In the browserĬonsole.log(globalThis = window) // => trueĬonsole.log(globalThis = global) // => trueĬonsole.log(globalThis = self) // => true Nullish coalescing operator Node.js calls it global. In a web worker, it is self.

It’s also very common to need to access the global object, which, depending on the context, is represented by a different variable. In modern applications, it’s normal to have the same JavaScript code running in multiple environments. In this article, you’ll find out what is new in ECMAScript 2020.

And what makes things even better is that today’s browsers add support for new features quickly, with a short time between releases. And since 2015, it has been evolving year after year, with the addition of features like classes, modules, async/await and many others. November 16th, 2020 Comments JavaScript: Guide to New ECMAScript 2020 FeaturesĮCMAScript is the specification upon which JavaScript is based.

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