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常用的ES6、ES7、ES8特性 #9

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mamba-1024 opened this issue Oct 15, 2018 · 3 comments

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mamba-1024 commented Oct 15, 2018

ES全称ECMAScript，ECMAScript是ECMA制定的标准化脚本语言。

Owner Author

mamba-1024 commented Oct 15, 2018 •

edited

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常用的es6特性：

let 和 const定义变量
字符串模板（${ tmp }）
类（class）
Set

 // 去除数组的重复成员
[...new Set(array)]
// 也可以用于去除字符串里面的重复字符
[...new Set('ababbc')].join('')
// "abc"

模块化（Module）
箭头函数
扩展运算符（...）
函数参数默认值
Promise

Owner Author

mamba-1024 commented Oct 16, 2018 •

edited

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es7特性:

includes()
指数操作符 ( ** 基本上很少有到)
x ** y =》 Math.pow(x, y)

Owner Author

mamba-1024 commented Oct 16, 2018 •

edited

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es8特性：

async/await
这个2016就可以用了，只是后来加在了ECMAScript2017标准中
Object.values()
Object.entries()

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