字符串数组格式数据转换成数组类型数据

方法一：eval

let str = '["1","2","3","4","5"]'
let result = eval('(' + str + ')')
console.log(str)
console.log(result)

方法二：JSON.parse()

let str = '["1","2","3","4","5"]'
console.log(JSON.parse(str))