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
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