1)、ECMAScript是一个标准(欧洲计算机制造商协会),JavaScript只是它的一个实现,其他实现包括ActionScript(Flash脚本) 2)、ECMAScript可以为不同种类的宿主环境提供核心的脚本编程能力,即ECMAScript不与具体的宿主环境相绑定,如JavaScript的宿主环境是浏览器,AS的宿主环境是Flash。、 3)、ECMA
因此一个JavaScript脚本在编写后可以带到任意机器上使用,前提上机器上的浏览器支 持JavaScript脚本语言,目前JavaScript已被大多数的浏览器所支持。 二、ECMAScript(JavaScript核心与语法) 2.1、ECMAScript定义 1)、ECMAScript是一个标准(欧洲计算机制造商协会),JavaScript只是它的一个实现,其他实现包括ActionScript(Flash脚本...
text/javascript for ES modules application/json for JSON application/wasm for Wasm JScopy import 'data:text/javascript,console.log("hello!");'; import _ from 'data:application/json,"world!"' assert { type: 'json' }; data: URLs only resolve bare specifiers for builtin modules and absolut...
especially for developers using React. By staying updated with these developments, you can ensure that your React ES7 skills stay relevant and that you can take full advantage of the evolving features of the JavaScript language.
A good understanding of ECMAScript 6 features is key for all JavaScript developers going forward. The language features introduced in ECMAScript 6 represent the foundation upon which JavaScript applications will be built for the foreseeable future. That’s where this book comes in. My hope is that...
1.1、javascript组成 ECMAScript,描述了该语言的语法和基本对象,如类型、运算、流程控制、面向对象、异常等。 文档对象模型(DOM),描述处理网页内容的方法和接口。 浏览器对象模型(BOM),描述与浏览器进行交互的方法和接口。 JavaScript由对象组成,一切皆为对象。
规范常常使用一个带编号的列表来显示算法中的步骤。这个小算法被用作准确地表达ECMAScript语言构造需要的语义。这些算法并不是打算暗示任何具体实现的使用。...
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...
import 'data:text/javascript,console.log("hello!");'; import _ from 'data:application/json,"world!"' with { type: 'json' }; copy data: URLs only resolve bare specifiers for builtin modules and absolute specifiers. Resolving relative specifiers does not work because data: is not a special...
Non-breaking additions to support full Unicode, including new Unicode literal form in strings and new RegExp u mode to handle code points, as well as new APIs to process strings at the 21bit code points level. These additions support building global apps in JavaScript....