//1. 指数运算符(幂): **
console.log(3 ** 3);//27
//2. Array.prototype.includes(value) : 判断数组中是否包含指定value
let arr = [1,2,3,4, 'abc'];
console.log(arr.includes(2));//true
console.log(arr.includes(5));//false
//1. 指数运算符(幂): **
console.log(3 ** 3);//27
//2. Array.prototype.includes(value) : 判断数组中是否包含指定value
let arr = [1,2,3,4, 'abc'];
console.log(arr.includes(2));//true
console.log(arr.includes(5));//false
本文标题：ES7
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