ECMAScript介绍
文章目录
- ECMAScript介绍
ECMAScript介绍
ECMAScript 是一种脚本语言的标准，主要用于在网页上实现动态功能。它是 JavaScript 的基础，定义了语言的语法、类型、结构、语句、关键字、保留字、操作符、内置对象等。
ECMAScript 的主要版本包括：
- ES5（ECMAScript 5）：发布于 2009 年，增加了许多新特性，如严格模式、JSON 支持等。
- ES6（ECMAScript 2015）：引入了许多重要的新特性，如箭头函数、类、模块、Promise、解构赋值等。
- 后续版本：每年发布的新版本（如 ES7、ES8 等）继续增加新特性和改进。
ECMAScript 的标准由 ECMA 国际组织维护，确保不同的 JavaScript 引擎（如 V8、SpiderMonkey 等）能够遵循相同的规范。
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