ES7/8/9
moyanfaker 2020-12-15 ES7/8/9js
# ES7/8/9
# ES7
# 幂操作
// console.log(Math.pow(3, 5));
console.log(3 ** 5); //ES7
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# Array
# includes
<script>
let arr = [12, 55, 66, 33, 23]; console.log(12 in arr); //false
console.log(arr.indexOf(12) != -1); //true //ES7
console.log(arr.includes(12));//true
</script>
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# ES8:
# async/await
# ES9:
# rest/spread
# 异步迭代
# Promise.all/race/finally
# 正则表达式
# ES6
- 基础语法：变量 、函数
- babel
- 异步操作：Promise、async/await
- 面向对象、模块化