正如标题所说,我需要在分组对象中推送对象数组。我在这里找到了例子,它就是:
function groupBy(array, col, value) {
var r = [], o = {};
array.forEach(function (a) {
if (!o[a[col]]) {
o[a[col]] = {};
o[a[col]][col] = a[col];
o[a[col]][value] = 0;
r.push(o[a[col]]);
}
o[a[col]][value] += +a[value];
});
return r;
};
var data = [{ Phase: "Phase 1", Step: "Step 1", Task: "Task 1", Value: "5" }, { Phase: "Phase 1", Step: "Step 1", Task: "Task 2", Value: "10" }, { Phase: "Phase 1", Step: "Step 2", Task: "Task 1", Value: "15" }, { Phase: "Phase 1", Step: "Step 2", Task: "Task 2", Value: "20" }, { Phase: "Phase 2", Step: "Step 1", Task: "Task 1", Value: "25" }, { Phase: "Phase 2", Step: "Step 1", Task: "Task 2", Value: "30" }, { Phase: "Phase 2", Step: "Step 2", Task: "Task 1", Value: "35" }, { Phase: "Phase 2", Step: "Step 2", Task: "Task 2", Value: "40" }];
document.write('<pre>' + JSON.stringify(groupBy(data, 'Phase', 'Value'), 0, 4) + '</pre>');
我的结果是:
[
{
"Phase": "Phase 1",
"Value": 50
},
{
"Phase": "Phase 2",
"Value": 130
}
]
我想得到的是,我的分组对象内部是具有属性的对象数组:任务和值(对于我想要的每个任务的值)。
我试过了:
function groupBy(array, col, col2, value) {
var r = [], o = {};
array.forEach(function (a) {
if (!o[a[col]]) {
o[a[col]] = {};
o[a[col]][col] = a[col];
o[a[col]][col2] = a[col2];
o[a[col]][value] = 0;
r.push(o[a[col]]);
}
o[a[col]][value] += +a[value];
});
return r;
};
并添加&#34;任务&#34;参数,但只有我得到:
[
{
"Phase": "Phase 1",
"Task" : "Task 1",
"Value": 50
},
{
"Phase": "Phase 2",
"Task" : "Task 1",
"Value": 130
}
]
感谢您的帮助!
答案 0 :(得分:1)
您正在使用Phase
和Task
作为哈希表中的密钥。所以代码需要像这样改变
function groupBy(array, col, col2, value) {
var r = [],
o = {};
array.forEach(function(a) {
// key is not 'Phase' only, it should combine 'Phase' and 'Task', others are the same.
if (!o[a[col] + a[col2]]) {
o[a[col] + a[col2]] = {};
o[a[col] + a[col2]][col] = a[col];
o[a[col] + a[col2]][col2] = a[col2];
o[a[col] + a[col2]][value] = 0;
r.push(o[a[col] + a[col2]]);
}
o[a[col] + a[col2]][value] += +a[value];
});
return r;
};
查看here。