日常小结/JS数组转字符串（3种方法）

http://c.biancheng.net/view/5673.html

toString()

var a = [1,2,3,4,5,6,7,8,9,0];  //定义数组
 var s = a.toString();  //把数组转换为字符串
 console.log(s);  //返回字符串“1,2,3,4,5,6,7,8,9,0”
 console.log(typeof s);  //返回字符串string，说明是字符串类型

var a = [1,2,3,4,5,6,7,8,9,0];  //定义数组
 var b = [1,2,3,4,5,6,7,8,9,0];  //定义数组
 var s = a + b;  //数组连接操作
 console.log(s);  //返回“1,2,3,4,5,6,7,8,9,01,2,3,4,5,6,7,8,9,0”
 console.log(typeof s);  //返回字符串string，说明是字符串类型

1
2
3

var a = [1,[2,3],[4,5]],[6,[7,[8,9],0]]];  //定义多维数组
 var s = a.toString();  //把数组转换为字符串
 console.log(S);  //返回字符串“1,2,3,4,5,6,7,8,9,0”

1
2
3

var a = [1,2,3,4,5];  //定义数组
var s = a.toLocalString();  //把数组转换为本地字符串
console.log(s);  //返回字符串“1,2,3,4,5,6,7,8,9,0”

join()

1
2
3

	var a = [1,2,3,4,5];  //定义数组
var s = a.join("==");  //指定分隔符
console.log(s);  //返回字符串“1==2==3==4==5”

split()

	var s = "1==2== 3==4 ==5";
var a = s.split("==");
console.log(a);
console.log(a.constructor == Array);