javascript - 填充像php这样的键的javascript数组简写

在Javascript中，知道我可以设置一个数组，以便键是一个自动编号(从0开始)分配的数组:

var d_names = new Array("Sunday", "Monday", "Tuesday",
              "Wednesday", "Thursday", "Friday", "Saturday");

// Key for Sunday is '0'

如果我想分配 key ，我可以这样做:

    var d_names={};
    d_names[5]="Sunday";
    d_names[6]="Monday";
    d_names[7]="Tuesday";
    d_names[8]="Wednesday";
    d_names[9]="Thursday";
    d_names[10]="Friday";
    d_names[11]="Saturday";

    // Key for Sunday is '5'

但是，有没有像在PHP中那样分配 key 的简便方法？

var d_names = new Array(5=>"Sunday", 6=>"Monday", 7=>"Tuesday", 8=>"Wednesday",
            9=>"Thursday", 10=>"Friday", 11=>"Saturday");

// Doesn't work

最佳答案

您想要的是一个对象:

var d_names = {
    5: "Sunday",
    6: "Monday"
    //...
};

然后，您可以像这样获得"Sunday":

var sunday = d_names[5];