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...
document.querySelector(el).requestFullscreen() :document.exitFullscreen();fullscreen();// Opens `body` in fullscreen modefullscreen(false);// Exits fullscreen mode 1. 2. 3. 4. 5. 6. 13.如何检测Caps Lock是否开启? 复制 <form><labelfor="username">Username:</label><inputid="username"...
JavaScript定义对象的属性,有两种方法。 obj.foo = true; // 直接用标识符作为属性名 obj['a' + 'bc'] = 123; // 用表达式作为属性名,这时要将表达式放在方括号之内 // ES6允许字面量定义对象时,用表达式作为对象的属性名,即把表达式放在**方括号**内 ...
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...
简介: 前端JavaScript入门到精通,javascript核心进阶ES6语法、API、js高级等基础知识和实战 —— Web APIs(四) 思维导图 一、日期对象 1.1 实例化 实例化,默认得到当前时间,也可以指定时间 1.2 日期对象方法 <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-...
// new form "\u{20BB7}" == " " == "\uD842\uDFB7" // new String ops " ".codePointAt(0) == 0x20BB7 // for-of iterates code points for(var c of " ") { console.log(c); } 模块 用于组件定义的模块的语言级支持。从流行的JavaScript模块加载器(AMD,CommonJS)中编码模式。由主机定...
A JavaScript mangler/compressor toolkit for ES6+. note: You can support this project on patreon: [link] The Terser Patreon is shutting down in favor of opencollective. Check out PATRONS.md for our first-tier patrons. Terser recommends you use RollupJS to bundle your modules, as that produces...