javascript - 使用下划线过滤以下 JSON

Question

我有一个这样的集合:

    var collection={
     "Today": [{
    "id": "1",
    "name": "iPod Nano",
    "image": "img/items/item1.jpg",
    "special": 0
}, {
    "id": "2",
    "name": "Samsung TV",
    "image": "img/items/item2.jpg",
    "special": 1
}],
"Monday 11 August 2014": [{
    "id": "3",
    "name": "Nikon Camera",
    "image": "img/items/item3.jpg",
    "special": 0

}, {
    "id": "4",
    "name": "iPad 1000",
    "image": "img/items/item4.jpg",
    "special": 0

}],

"Monday 30 August 2014 ": [{

    "id": "5",

    "name": "ar of Gold",
    "mage": "img / items / item5.jpg ",
    "special ": 1

}, {
    "id ": "6 ",
    " name ": "Buzz Light Year ",
    "image ": " img / items / item6.jpg ",
    "special ": 1

}]

};

我想过滤集合并只保留特殊 == 1 :

我试过:

 var Specials=_.reduce(collection,function(memo,item){
                var result = _.filter(item,function(c){
                    return c.special==0 ;
                });
                if(result.length > 0 ){
                    var newResult = {};
                    newResult.deals = result;
                    newResult.id = item.id;
                    memo = _.union(memo,newResult);
                }
                return memo;
            },[]); 
            var jsonText=JSON.stringify(Specials);

            console.log("=========>" + jsonText);

但没有得到我所期望的。

为什么？我希望结果是这样的:

var filtered={
"Today": [{
    "id": "2",
    "name": "Samsung TV",
    "image": "img/items/item2.jpg",
    "special": 1
}],

"Monday 30 August 2014 ": [{

    "id": "5",

    "name": "ar of Gold",
    "mage": "img / items / item5.jpg ",
    "special ": 1

}, {
    "id ": "6 ",
    " name ": "Buzz Light Year ",
    "image ": " img / items / item6.jpg ",
    "special ": 1

}]

};

Answer 1

我记得 reduce 有一些其他的功能，

如果需要保持相同的 JSON 结构，可以使用 each + reject fiddle

_.each(collection, function(items, key){

    var filtered = _.reject(items, function(item){ 
        return item.special < 1 
    });

    if(filtered.length){
        specials[key] = filtered;
    }
});