Question

我有一个json数据：

[{
    "name": "a",
    "data": "north",
    "value": "10",
    "finished": "50"
}, {
    "name": "b",
    "data": "north",
    "value": "100",
    "finished": "10"
}, {
    "name": "c",
    "data": "north",
    "value": "20",
    "finished": "50"
}, {
    "name": "a",
    "data": "south",
    "value": "80",
    "finished": "10"
}, {
    "name": "b",
    "data": "south",
    "value": "100",
    "finished": "10"
}, {
    "name": "c",
    "data": "south",
    "value": "30",
    "finished": "70"
}]

我想根据名称添加和分类数据。例如：＆＃34; name＆＃34; ：＆＃34;＆＃34;将有10 + 80 = 90，完成＆＃34; 50 + 10＆＃34; = 60，b的值为200，依旧等等。

我将json数据存储在角度范围内。

$scope.cuurentData = data;
var totalData = $scope.currentData;
for (var i = 0; i < totalData.length; i++) {
    if (totalData.name === "a") {
        // right code 
    }
}

请告诉我如何添加数据并在此处继续。

Answer 1

$scope.currentData=data;               
$scope.classifiedData=[];//This will hold the classified result

   $scope.currentData.forEach(function(elem1){
        var flag = false;
        var i = 0;
        $scope.classifiedData.forEach(function(elem2, index){                
            if(elem1.name == elem2.name){
                flag = true;
                i = index;
            }
        }); 
        if(flag){
            $scope.classifiedData[i].value = Number($scope.classifiedData[i].value)+Number(elem1.value);
            $scope.classifiedData[i].finished = Number($scope.classifiedData[i].finished)+Number(elem1.finished);
        }else{
            $scope.classifiedData.push(elem1);
        }   
      });
//Check the final result
console.log(JSON.stringify($scope.classifiedData));

Answer 2

您可以使用javascript reduce功能

result = data.reduce(function(b, a){
    var existing;
    for (var i = 0; i < b.length; i++){
        if(b[i].name == a.name) existing = b[i];
    }; 
    if (existing){
        existing.value = Number(existing.value) + Number(a.value);
        existing.finished = Number(existing.finished) + Number(a.finished);
    } else {
        b.push(a)
    }
    return b;
}, []);

在以角度分类时添加json数据

2 个答案: