js数组与字符串互相转换

数组转字符串：

let a = ['1','2','3']
console.log(a.join(','))

输出’1,2,3’

字符串转数组

let a = '1,2,3'
console.log(a.split(',')

输出的就是数组

转自：https://www.cnblogs.com/prospective-zkq/p/11740262.html