使用 jQuery grep() 过滤 JSON 数组 [英] Filtering JSON array using jQuery grep()

问题描述

我在本网站上搜索了许多示例，但似乎无法满足我的需求.我只需要使用 grep() 过滤一些 JSON 结果.

I've searched many examples on this site but can't seem to fit them into my needs. I just need to filter some JSON results using grep().

以下是我的 JSON:

Below is my JSON:

var data = { "items": [
    {
        "id":       1,
        "category": "cat1"
    },
    {        
        "id":       2,
        "category": "cat2"
    },
    {
        "id":       3,
        "category": "cat1"
    }
]}

以上面的例子

• 我将如何返回类别为 cat1 的所有项目?
• 如何返回类别为 cat1 且 id 为 3 的所有项目?

• how would I return all items with the category of cat1 ?
• how would I return all items with the category of cat1 and id of 3 ?

我知道这不是一个很好的例子，但任何帮助都会很棒！谢谢！

I know this isn't a great example but any help would be awesome! Thanks!

我尝试了以下变体

data.items = $.grep(data.items, function(element, index) {
    return element.id == 1;
    console.log(data.items);
});

推荐答案

var data = {
    "items": [{
        "id": 1,
        "category": "cat1"
    }, {
        "id": 2,
        "category": "cat2"
    }, {
        "id": 3,
        "category": "cat1"
    }]
};

var returnedData = $.grep(data.items, function (element, index) {
    return element.id == 1;
});


alert(returnedData[0].id + "  " + returnedData[0].category);

returnedData 返回一个对象数组，因此您可以通过数组索引访问它.

The returnedData is returning an array of objects, so you can access it by array index.

http://jsfiddle.net/wyfr8/913/

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