JS基础 字典相关操作

最近项目JS中需要建一个特殊的颜色库，需要用到类似C#中的dictionary的概念 然后一查发现JS没有dictionary 而是Array

初始化Array

1 colorDic = new Array();
2 
3 colorDiv["耕地"] = "#009900";
4 colorDiv["园地"] = "#009933";
5 colorDiv["林地"] = "#66CC33";
6 colorDiv["草地"] = "#00CC00";

View Code

调用

alert(colorDic["耕地"])

遍历

 1 var output = "";
 2         for (var key in colordic) {
 3             if (output == "") {
 4                 output = colordic[key];
 5             }
 6             else {
 7                 output += "|" + colordic[key];
 8             }
 9         }
10         alert(output);

View Code

注意 如果只是单纯的数据 其实也可以进行遍历 只是key变成了1、2、3

1 var dic2 = ["a", "b", "c", "d"];     
2         //遍历字典
3         for (var key in dic2) {
4             //alert(dic2[key]);
5         }

View Code

 

转载于:https://www.cnblogs.com/CoffeeEddy/p/5656292.html