如何过滤多维 JavaScript 数组 [英] How to filter multidimensional JavaScript array

问题描述

我有这个数据:

var object = [{
    "nid": "31",
    "0": {
        "tid": "20",
        "name": "Bench Press",
        "objectDate": "2012-02-08",
        "goal": "rep",
        "result": "55.00",
        "comments": "sick!",
        "maxload": "250"
    },
    "1": {
        "tid": "22",
        "name": "Back Squat",
        "objectDate": "2012-02-08",
        "goal": "time",
        "result": "8.00",
        "comments": "i was tired.",
        "maxload": "310"
    }},
{
    "nid": "30",
    "0": {
        "tid": "19",
        "name": "Fran",
        "objectDate": "2012-02-07",
        "goal": "time",
        "result": "5.00",
        "comments": null
    }}];

我想按名称过滤它.例如，如果我为Fran"这个名字应用一个过滤器，我想要这样的东西:

and I would like to filter it by name. For instance, if I apply a filter for the name "Fran", I'd like to have something like this:

[0] => Array
     (
        [tid] => 19
        [name] => Fran
        [objectDate] => 2012-02-07
        [goal] => time
        [result] => 5.00
        [comments] => 
     )
[1] => Array
     (
        [tid] => 19
        [name] => Fran
        [objectDate] => 2012-02-08
        [goal] => rep
        [result] => 55.00
        [comments] => woohoo!
     )

有可能实现吗?

推荐答案

Javascript 中没有此功能.你必须像这样编写自己的函数.

There is no function for this in Javascript. You have to write your own function like this.

var arr = [{"nid":"31","0":{"tid":"20","name":"Bench Press","objectDate":"2012-02-08","goal":"rep","result":"55.00","comments":"sick!","maxload":"250"},"1":{"tid":"22","name":"Back Squat","objectDate":"2012-02-08","goal":"time","result":"8.00","comments":"i was tired.","maxload":"310"}},{"nid":"30","0":{"tid":"19","name":"Fran","objectDate":"2012-02-07","goal":"time","result":"5.00","comments":null}}];


function filterByProperty(array, prop, value){
    var filtered = [];
    for(var i = 0; i < array.length; i++){

        var obj = array[i];

        for(var key in obj){
            if(typeof(obj[key] == "object")){
                var item = obj[key];
                if(item[prop] == value){
                    filtered.push(item);
                }
            }
        }

    }    

    return filtered;

}

var byName = filterByProperty(arr, "name", "Fran");
var byGoal = filterByProperty(arr, "goal", "time");

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