Question

我有这样的物体清单(从PHP到Pjson的编码):

{"10":{"10":["4","7","2","2","0","32"],"11":["5","22","1","1","0","0"]}}

translated:

{"X":{"Y":["unique_id","data","data","data","data","data"],"Y":["unique_id","data","data","data","data","data"]

但是,试图找到一种途径,通过寻找独一无二的种子来获得X:Y, 说是4。

这样做的最有效方式是什么?

Answer 1

If they re unique ID s, create a separate lookup table.

var id_lookup = {};

for(var x in data)
    for(var y in data[x])
        id_lookup[data[x][y][0]] = [x,y]

var coords = id_lookup[4];

alert(coords);  // [10,10]

alert(data[coords[0]][coords[1]]); // ["4","7","2","2","0","32"]

http://jsfiddle.net/LXE3B/“rel=“nofollow”

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