<pre class="language-javascript"><code>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"</code></pre>