标签：相互转换 color return style log 字符串 var eval str
1.字符串变成数组,split
var str = "1,2,3,4"; str.split(","); // ["1","2","3","4"]
str.split(); // ["1,2,3,4"]
2.数组变字符串,join
var arr = [1,2,3,4] arr.join(); // "1,2,3,4" arr.join(""); // "1234" arr.join(" + "); // "1 + 2 + 3 + 4"
玩个有点好玩的,将数组里面的数字求和
function sum(arr){ var str = arr.join(" + "); return eval(str); } var arr = [1,2,3,4]; sum(arr) // 10
标签：相互转换 color return style log 字符串 var eval str
原文地址：http://www.cnblogs.com/2han/p/6362793.html
