我有这个javascript对象。如何迭代其属性并计算一个特定值的数量？
angular.module('App',[])
.controller('mainCtrl', ['$scope', function ($scope) {
var data = {
"plans":[
{
"id":1,
"code":"NEXT_DAY_500gm",
"name":"Next Day less than 500gm",
"cost":55,
"duration":24,
"min_weight":0,
"max_weight":500,
"COD":1,
"created_at":"-0001-11-30 00:00:00",
"updated_at":"-0001-11-30 00:00:00"
},
{
"id":2,
"code":"NEXT_DAY_500gm_1kg",
"name":"Next Day 500gm to 1kg",
"cost":70,
"duration":24,
"min_weight":501,
"max_weight":1000,
"COD":1,
"created_at":"-0001-11-30 00:00:00",
"updated_at":"-0001-11-30 00:00:00"
},
{
"id":3,
"code":"NEXT_DAY_1kg_2kg",
"name":"Next Day 1kg to 2kg",
"cost":95,
"duration":24,
"min_weight":1001,
"max_weight":2000,
"COD":1,
"created_at":"-0001-11-30 00:00:00",
"updated_at":"-0001-11-30 00:00:00"
},
{
"id":4,
"code":"SAME_DAY_500gm",
"name":"Same Day less than 500gm",
"cost":95,
"duration":8,
"min_weight":0,
"max_weight":500,
"COD":1,
"created_at":"-0001-11-30 00:00:00",
"updated_at":"-0001-11-30 00:00:00"
},
{
"id":5,
"code":"SAME_DAY_500gm_1kg",
"name":"Same Day 500gm to 1kg",
"cost":130,
"duration":8,
"min_weight":501,
"max_weight":1000,
"COD":1,
"created_at":"-0001-11-30 00:00:00",
"updated_at":"-0001-11-30 00:00:00"
},
{
"id":6,
"code":"SAME_DAY_1kg_2kg",
"name":"Same Day 1kg to 2kg",
"cost":165,
"duration":8,
"min_weight":1001,
"max_weight":2000,
"COD":1,
"created_at":"-0001-11-30 00:00:00",
"updated_at":"-0001-11-30 00:00:00"
}
]
};
$scope.data1=data;
}]);
我的想法是想要计算“状态”字段为“完成”的次数，并将该计数分配给变量。如果完整是4次我的销售将等于4.我怎么能这样做？任何提示？
答案 0 :(得分：3)
您需要在此处使用过滤器：
var count = data.filter(function(obj) {
return obj.status === 'COMPLETED';
}).length;
console.log(count);
答案 1 :(得分：1)
forEach()方法每个数组元素执行一次提供的函数。
var data = [{
"id": 23,
"sender_id": 3,
"courier_id": 0,
"deliverer_id": 0,
"status": "PENDING",
"consignment_id": "55C0A999",
"sender_name": "asdasdas d",
"cost": "40",
"package_description": "asdasdasd",
"sender_address": "asdasdasd",
"sender_longitude": "",
"sender_latitude": "",
"sender_number": null,
"receiver_address": "adasdasd",
"receiver_name": "Shifat Adnan",
"receiver_number": "01713206053",
"receiver_longitude": "",
"receiver_latitude": "",
"current_longitude": "",
"current_latitude": "",
"deliverer": null,
"recipient_pays": 0,
"instructions": "2332323",
"payment_status": null,
"cod": 0,
"recipient_zone_id": 2,
"plan_id": 2,
"store_id": null,
"storeproduct_id": null,
"created_at": "2015-08-04 12:01:29"
}, {
"id": 28,
"sender_id": 5,
"courier_id": 0,
"deliverer_id": 0,
"status": "COMPLETED",
"consignment_id": "10F317",
"sender_name": "bleh",
"cost": "398",
"package_description": "Business Order",
"sender_address": "bleh",
"sender_longitude": "bleh",
"sender_latitude": "bleh",
"sender_number": "bleh",
"receiver_address": "kjakdjlsdjlaksdjl",
"receiver_name": "Nigga",
"receiver_number": "010203001",
"receiver_longitude": "",
"receiver_latitude": "",
"current_longitude": "bleh",
"current_latitude": "bleh",
"deliverer": null,
"recipient_pays": 0,
"instructions": "jslklsdflkj",
"payment_status": null,
"cod": 0,
"recipient_zone_id": null,
"plan_id": 4,
"store_id": null,
"storeproduct_id": null,
"created_at": "2015-10-04 09:36:23"
}, {
"id": 34,
"sender_id": 5,
"courier_id": 0,
"deliverer_id": 0,
"status": "PENDING",
"consignment_id": "137F24",
"sender_name": "bleh",
"cost": "3223",
"package_description": "Business Order",
"sender_address": "bleh",
"sender_longitude": "bleh",
"sender_latitude": "bleh",
"sender_number": "bleh",
"receiver_address": "kasdlkaskd asldka",
"receiver_name": "FAAskl",
"receiver_number": "199102909",
"receiver_longitude": "",
"receiver_latitude": "",
"current_longitude": "bleh",
"current_latitude": "bleh",
"deliverer": null,
"recipient_pays": 0,
"instructions": "dsdsdf",
"payment_status": null,
"cod": 0,
"recipient_zone_id": 2,
"plan_id": 3,
"store_id": null,
"storeproduct_id": null,
"created_at": "2015-10-06 07:58:28"
}, {
"id": 35,
"sender_id": 5,
"courier_id": 0,
"deliverer_id": 0,
"status": "COMPLETED",
"consignment_id": "13C476",
"sender_name": "bleh",
"cost": "3310",
"package_description": "Business Order",
"sender_address": "bleh",
"sender_longitude": "bleh",
"sender_latitude": "bleh",
"sender_number": "bleh",
"receiver_address": "sdfs dfasdfasdfasdf",
"receiver_name": "sfasd",
"receiver_number": "224",
"receiver_longitude": "",
"receiver_latitude": "",
"current_longitude": "bleh",
"current_latitude": "bleh",
"deliverer": null,
"recipient_pays": 0,
"instructions": "dasdasd",
"payment_status": null,
"cod": 0,
"recipient_zone_id": 2,
"plan_id": 1,
"store_id": 1,
"storeproduct_id": 1,
"created_at": "2015-10-06 12:54:14"
}, {
"id": 36,
"sender_id": 5,
"courier_id": 0,
"deliverer_id": 0,
"status": "COMPLETED",
"consignment_id": "13C4B3",
"sender_name": "bleh",
"cost": "330",
"package_description": "Business Order",
"sender_address": "bleh",
"sender_longitude": "bleh",
"sender_latitude": "bleh",
"sender_number": "bleh",
"receiver_address": "sdfs dfasdfasdfasdf",
"receiver_name": "Some full name",
"receiver_number": "224",
"receiver_longitude": "",
"receiver_latitude": "",
"current_longitude": "bleh",
"current_latitude": "bleh",
"deliverer": null,
"recipient_pays": 0,
"instructions": "dasdasd",
"payment_status": null,
"cod": 0,
"recipient_zone_id": 3,
"plan_id": 4,
"store_id": 1,
"storeproduct_id": 2,
"created_at": "2015-10-06 12:55:15"
}];
var count = 0;
data.forEach(function(item) {
if (item.status === 'COMPLETED') {
++count;
}
});
alert(count);
答案 2 :(得分：0)
您可以像这样循环遍历json对象：
var complete = 0;
for(var i = 0; i < data.length; i++) {
var obj = data[i];
if (obj['status'] == "COMPLETE"){
complete += 1;
}
}
//do something with complete.
答案 3 :(得分：0)
var count = 0;
for (var i = 0, leng = data.plans.length; i < leng; i++)
{
if (data.plans[i].status === 'COMPLETE')
{
count++;
}
}
if (count === 4)
{
}