②fullfill:满足状态,当主动调用resolve,处于该状态,且会回到.then ③reject:拒绝状态,主动reject后处于该状态,且回到.catch 代码语言:javascript 代码运行次数:0 运行 AI代码解释 <script> const login = function () { return new Promise((resolve, reject) => { $.ajax({ url: 'http://www.codeedu.com...
const fullscreen = (mode = true, el = 'body') => mode ? document.querySelector(el).requestFullscreen() : document.exitFullscreen() fullscreen() // 将body以全屏模式打开 fullscreen(false) // 退出全屏模式 13. 如何检测大写锁定是否打开? <form> <label for="username">Username:</label> <...
fullscreen();// Opens `body` in fullscreen modefullscreen(false);// Exits fullscreen mode 13.如何检测Caps Lock是否开启? <form><labelfor="username">Username:</label><input id="username"name="username"> <labelfor="password">Passwor...
function getFullName(user) { const firstName = user.firstName; const lastName = user.lastName; } // good function getFullName(obj) { const { firstName, lastName } = obj; } // best function getFullName({ firstName, lastName }) { } 4、对象 单行定义的对象,最后一个成员不以逗号结尾。
Since this long time passed between ES5.1 and ES6, the release is full of important new features and major changes in suggested best practices in develo JavaScript programs. To understand how fundamental ES2015 is, just keep in mind that with this version, the specification went from 250 pages...
第一章. ECMAScript 6简介 (1)ECMAScript和JavaScript的关系 (2)ECMAScript的历史 (3)部署进度 (4)Babel转码器 (5)Traceur转码器 (6)ECMAScript 7 第二章.let和const命令 (1)let命令 (2)块级作用域 (3)const命令 (4)全局对象的属性第三章.变量的解构赋值 (1)数组的解构赋值 (2)对象的解构赋值 (3...
一、模板语法 Vue 使用一种基于 HTML 的模板语法,使我们能够声明式地将其组件实例的数据绑定到呈现的 DOM 上。所有的 Vue 模板都是语法层面合法的 HTML,可以被符合规范的浏览器和 HTML 解析器解析。 在底层机制中,Vue 会将模板编译成高度优化的 JavaScript 代码。结合
Write a JavaScript program that converts float-point arithmetic to decimal form, and creates a comma separated string from a number. Click me to see the solution 126. Format Number as Currency Write a JavaScript program to create a specified currency format from a given number. ...
一、箭头函数 1、概念及格式 一种定义函数的方式,有点抽象,拿代码例子来观察一下吧🧐 (1)以往的函数定义 <script> const 函数名= function(){代码块}; </script> (2)箭头函数的定义【可以理解成function被箭头=>取代了】 <script> const 函数名 =()=>{代码块}; ...
JavaScript continues to be a fast-paced ecosystem with ever-changing tooling options. In general, our approach has always been to go slow and use battle-tested systems that are known to work well, rather than what has the newest or coolest feature-set. That being said, there are a couple...