*// 在 Node 中使用模块的正确姿势:constlog=require("./lib/util_for_node");constplArray=['Java','Kotlin','JavaScript','Python','Go'];// ES5 funvariter=plArray.map(function(e){return'Hi,'+e;})log(iter);// ES6 arrow funconst
This tutorial covers every version of JavaScript: The Original JavaScript ES1 ES2 ES3 (1997-1999) The First Main Revision ES5 (2009) The Second Revision ES6 (2015) The Yearly Additions (2016, 2017 ... 2021, 2022) Learning Speed In this tutorial, the learning speed is your choice. ...
《ECMAScript 6入门》是一本开源的 JavaScript 语言教程,全面介绍 ECMAScript 6 新增的语法特性。 - fory114/es6tutorial
Usually, we’d have some I/O operation, but for simplicity, let’s just use setTimeout and return a promise. (Note that ES6 also introduced native promises to JavaScript.) function asyncDouble(x) { var deferred = Promise.defer(); setTimeout(function(){ deferred.resolve(x*2); }, ...
It hooks into the babel engine, using both es2015 and react presets, in order to compile ES6 React code into a format able to be run in any standard browser. For more details on how each of these JavaScript tools operates, please read their corresponding reference docs. Want to see your...
JavaScript If you want to study these subjects first, find the tutorials on ourHome page. In addition, you should also have some experience with the new JavaScript features introduced in ECMAScript 6 (ES6), you will learn about them in theReact ES6chapter. ...
Note that here, we are using the ES6 shorthand method definition syntax:model()is the same as writingmodel: function(). Ember will use the model object returned above and save it as an attribute calledmodel, available to the rentals template we generated with our route inRoutes and Templates...
You can refer to the React documentation for more information about supported browsers. Supported Language Features and Polyfills This project supports a superset of the latest JavaScript standard. In addition to ES6 syntax features, it also supports: Exponentiation Operator (ES2016). Async/await (ES...
ES6 (also known as EcmaScript 6 or ES2015) introduces many new features to JavaScript, including classes and scoped variables. JSX on the other hand, provides a convenient way to include HTML code in JavaScript. When developing a library you can’t always know how it will be utilized. ...
Last but not least, a killer advantage when using async/await is that it’s much easier to debug. Debugging promises has always been such a pain for 2 reasons You can’t set breakpoints in arrow functions that return expressions (no body). ...