If you don't wish to use a transpiler, or if you would like to see compatibility over time, you can view this site to see which browsers will support the new ES6įeatures. However,ĮS6 javascript can be converted into ES5 code by using a transpiler such asīabel is the most popular transpiler, which converts ES6 into ES5 javascript code, that works in all modern web browsers.
One drawback is that ES6 is not yet fully supported in all modern web browsers. The advantage of using ES6 is for it's simplicity and powerfull new features, which we discuss below. The findIndex() Array method is similar to find(), but it will return the first index of the matching value.ES6 denotes the version or standard of javascript.īefore ES6, there was versions of javascript from ES1 through ES5.ĮS6 is sometimes referred to as ES2015 since ES6 first came out in 2015. Assign a variable var color = 'blue' let animal = 'lion' if ( true ) A var is function-scoped, meaning only functions will introduce a new scope. There are a few important differences between the new keywords and the previously existing var keyword.īoth let and const are block-scoped, meaning the variable can be scoped to any block, such as if, for, or while. Now you can also assign values with let and const. Previously, there was only one way to declare a variable in JavaScript – the var statement. One of the most important new additions of ES6 are let and const statements.
In this article, we’ll go over some of the most commonly used features of ES6. You can still write all the same JavaScript code from the previous versions, but new syntax and features are now available. It’s important to note that ES6 is not a different language, but simply the next version of ECMAScript, much like HTML5 is the next edition of HTML. It is still the common convention to use a bundler like webpack to run Babel and compile ES6 down to code that older browsers can understand, but according to Can I Use, around 90% of all browsers can natively understand ES6 syntax. When ES6 was first introduced, the features were not available on the vast majority of browsers, and it was necessary to use a compiler like Babel if you wanted to utilize any of the features. This version is commonly known as ECMAScript2015 or ES6. The sixth edition of ECMAScript – the scripting language specification by which JavaScript is standardized – introduced many new features, upgrades, and shortcuts to the JavaScript programming language. Learn about the new ES6 features, enhancements, and shortcuts introduced to the JavaScript programming language.
0 kommentar(er)
