js 字符串和数组 互转

1.字符串----->数组

var str ="lao-da-de-shou-hu-xing";

arr=str.split("-");//以短线作为分界线

//arr=[lao,da,de,shou,hu,xing]

2.数组------>字符串

var arr=[lao,da,de,shou,hu,xing];

str=arr.join("-");//str ="lao-da-de-shou-hu-xing";

或

for(int i=0;i<arr.length;i++){

　　str+=arr[i]+"-";//"lao-da-de-shou-hu-xing-"

}

str=str.substring(0,str.length-1);//截取字符串第一个到倒数第二个"lao-da-de-shou-hu-xing"