JS字符串和数组之间的转换

1、字符串转换为数组

var string = '123,456,789';

var stringResult = string.split(',');

console.log(stringResult) //输出["123", "456", "789"]

var string2 = 'abcdef'

var string2Result = string2.split('')

console.log(string2Result) //输出['a','b','c','d','e','f']

string2.split(",").map(Number);//输出[123,456,789]

JSON.parse("[" + string + "]"); //输出[123,456,789]

2、数组转换为字符串

var array = ['abc', 'def', 'hig']

var arrayResult = array.join(',')

console.log(arrayResult) // 输出"abc,def,hig"

array.toString()//输出"abc,def,hig"