通过jQuery中的特定值从对象中获取对象

Question

我有一个这样的对象。

var obj = 
{
    0:{submissionID: "136169", date: "2018-02-17 14:40:00", compId: "j1hrxej5", browser: "Chrome", formName: "Name1"}
    1:{submissionID: "6113", date: "2018-02-17 12:55:13", compId: "j1hrxej5", browser: "Mozila", formName: "Name2"}
    2:{submissionID: "500", date: "2018-02-16 18:45:58", compId: "jhg2l9lj", browser: "Opera", formName: "Name3"}
    3:{submissionID: "306", date: "2018-02-16 18:43:45", compId: "j372155lj", browser: "Chrome", formName: "Name4"}
    4:{submissionID: "50150", date: "2018-02-16 18:41:36", compId: "j37189lj", browser: "Opera", formName: "Name5"}
};

我可以通过它的 submitID 取一个对象吗？ 像 SQL。 首先我创建了这样的对象。

var obj = 
{
    136169:{submissionID: "136169", date: "2018-02-17 14:40:00", compId: "j1hrxej5", browser: "Chrome", formName: "Name1"}
    6113:{submissionID: "6113", date: "2018-02-17 12:55:13", compId: "j1hrxej5", browser: "Mozila", formName: "Name2"}
    500:{submissionID: "500", date: "2018-02-16 18:45:58", compId: "jhg2l9lj", browser: "Opera", formName: "Name3"}
    306:{submissionID: "306", date: "2018-02-16 18:43:45", compId: "j372155lj", browser: "Chrome", formName: "Name4"}
    50150:{submissionID: "50150", date: "2018-02-16 18:41:36", compId: "j37189lj", browser: "Opera", formName: "Name5"}
}; 

并获得 obj[submissionID]，但我现在必须修复我的代码

Answer 1

使用Object.values并find

var idToFind = "500";
var output = Object.values( obj ).find( s => s.id == idToFind );

Answer 2

您可以使用数组而不是对象，如下所示：

var obj = 
[
    {submissionID: "136169", date: "2018-02-17 14:40:00", compId: "j1hrxej5", browser: "Chrome", formName: "Name1"}
    {submissionID: "6113", date: "2018-02-17 12:55:13", compId: "j1hrxej5", browser: "Mozila", formName: "Name2"}
    {submissionID: "500", date: "2018-02-16 18:45:58", compId: "jhg2l9lj", browser: "Opera", formName: "Name3"}
    {submissionID: "306", date: "2018-02-16 18:43:45", compId: "j372155lj", browser: "Chrome", formName: "Name4"}
    {submissionID: "500", date: "2018-02-16 18:41:36", compId: "j37189lj", browser: "Opera", formName: "Name5"}
];

然后，创建一个过滤器函数：

var specificID = "500";
val filteredArray = array.filter(function(element) {
    return (element.submissionID === specificID)
};
// filteredArray[0] is the object that you are looking for

可以在此处找到有关过滤器方法的更多详细信息

Answer 3

对于您的回应，请尝试以下方法：

var obj = 
{
    0:{submissionID: "136169", date: "2018-02-17 14:40:00", compId: "j1hrxej5", browser: "Chrome", formName: "Name1"},
    1:{submissionID: "6113", date: "2018-02-17 12:55:13", compId: "j1hrxej5", browser: "Mozila", formName: "Name2"},
    2:{submissionID: "500", date: "2018-02-16 18:45:58", compId: "jhg2l9lj", browser: "Opera", formName: "Name3"},
    3:{submissionID: "306", date: "2018-02-16 18:43:45", compId: "j372155lj", browser: "Chrome", formName: "Name4"},
    4:{submissionID: "50150", date: "2018-02-16 18:41:36", compId: "j37189lj", browser: "Opera", formName: "Name5"}
};

如果这是响应，则使用以下方法获取所需的答案：

for (var i = Object.keys(obj).length - 1; i >= 0; i--) {
     if (obj[i].submissionID==="500") {
        var obj2 = obj[i];
        console.log(obj2);
        }
}

Answer 4

您可以使用Object.keys和Array.reduce的组合Array.reduce获取映射。 注意：事实证明，您声明对象的语法不正确，因为它缺少逗号。

var x = {
    0:{submissionID: "136169", date: "2018-02-17 14:40:00", compId: "j1hrxej5", browser: "Chrome", formName: "Name1"},
    1:{submissionID: "6113", date: "2018-02-17 12:55:13", compId: "j1hrxej5", browser: "Mozila", formName: "Name2"},
    2:{submissionID: "500", date: "2018-02-16 18:45:58", compId: "jhg2l9lj", browser: "Opera", formName: "Name3"},
    3:{submissionID: "306", date: "2018-02-16 18:43:45", compId: "j372155lj", browser: "Chrome", formName: "Name4"},
    4:{submissionID: "50150", date: "2018-02-16 18:41:36", compId: "j37189lj", browser: "Opera", formName: "Name5"}
}


function remap(obj){
    return Object.keys(obj).reduce(function(m, key){
        let item = obj[key];
        m[item.submissionID] = item;
        return m;
    }, {});
}

var newMap = remap(x); //"{"306":{"submissionID":"306","date":"2018-02-16 18:43:45","compId":"j372155lj","browser":"Chrome","formName":"Name4"},"500":{"submissionID":"500","date":"2018-02-16 18:45:58","compId":"jhg2l9lj","browser":"Opera","formName":"Name3"},"6113":{"submissionID":"6113","date":"2018-02-17 12:55:13","compId":"j1hrxej5","browser":"Mozila","formName":"Name2"},"50150":{"submissionID":"50150","date":"2018-02-16 18:41:36","compId":"j37189lj","browser":"Opera","formName":"Name5"},"136169":{"submissionID":"136169","date":"2018-02-17 14:40:00","compId":"j1hrxej5","browser":"Chrome","formName":"Name1"}}"

newMap["50150"]; //"{"submissionID":"50150","date":"2018-02-16 18:41:36","compId":"j37189lj","browser":"Opera","formName":"Name5"}"