【js】js數組與字符串的相互轉換方法

1、數組轉字符串

var a, b;
a = new Array(0,1,2,3,4);
b = a.join("-"); //“0-1-2-3-4”

2、字符串轉數組

var s = “abc,abcd,aaa”;
ss = s.split(",");// 在每個逗號(,)處進行分解 [“abc”, “abcd”, “aaa”]
var s1 = “helloworld”;
ss1 = s1.split(’’); //[“h”, “e”, “l”, “l”, “o”, “w”, “o”, “r”, “l”, “d”]

3、數組轉json串
var arr = [1,2,3, { a : 1 } ];
JSON.stringify( arr );

4、json字符串轉數組
var jsonStr = ‘[1,2,3,{“a”:1}]’;
JSON.parse( jsonStr );