按值对复杂的数组数组进行排序 [英] Sort Complex Array of Arrays by value within

问题描述

我在一个对象中设置了一个 javascript 数组，该对象与本地存储一起存储.它是 Phonegap 游戏的高分，格式为 {'0':[[score,time],[score,time]}，其中 0 是类别.我可以使用 a[1][0] 查看分数.我想先按高分排序.

I have an array of arrays in javascript set up within an object that I'm storing with local storage. It's high scores for a Phonegap game in the format {'0':[[score,time],[score,time]} where 0 is the category. I'm able to see the scores using a[1][0]. I want to sort with the high scores first.

var c={'0':[[100,11],[150,12]};
c.sort(function(){
    x=a[0];
    y=b[0];
    return y-x;
}

然而，b[0] 总是给出一个未定义的错误.

However, b[0] always gives an undefined error.

我是 Javascript 的新手，这是我作为学习经验的第一个主要测试.尽管我已经查看了许多有关 stackoverflow 的示例，但仍然无法弄清楚这一点.

I'm new to Javascript and making this is my first major test as a learning experience. Though I've looked at a number of examples on stackoverflow still can't figured this one out.

推荐答案

需要声明比较器函数的参数.

You need to declare the parameters to the comparator function.

c.sort(function(){

应该是

c.sort(function(a, b){

并且您需要在数组上调用 sort ，因为我不是我"指出

and you need to call sort on an array as "am not i am" points out so

var c={'0':[[100,11],[150,12]]};
c[0].sort(function(a, b){
    var x=a[0];
    var y=b[0];
    return y-x;
});

使 c 处于以下状态:

{
  "0": [
    [150, 12],
    [100, 11]
  ]
}

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