jQuery 数组 取值相加
0
悬赏园豆：20
[已解决问题]
解决于 2013-04-23 13:39
jQuery 中数组，Json 格式 [{"id":"1" ",amount":"2"},{"id":"2" "amount":"2"}{"id":"1" "amount":"4"}
]
我想得到id为1的总和，id为2的总和
最佳答案
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var result={};
for(var i=0; i< arr.length; i++){
result[arr[i].id]=(result[arr[i].id]||0)+parseInt(arr[i].amount);
}
//取计算结果
for(var p in result){
console.log("id为"+p+" 的结果："+result[p]);
}
收获园豆：5
应该可行
其他回答(3)
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var count=[0,0] $.each(data,function(i){ if(data[i].id==1){ count[0]=count[0]+data[i].amount; }else{ //do somthing } });
收获园豆：5
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var json = [{ "id": "1", "amount": "2" }, { "id": "2", "amount": "2" }, { "id": "1", "amount": "4"}]; var temp = new Array(); var result = new Array(); $.each(json, function (i, data) { var amount = 0; var str = temp.join(','); $.each(json, function (j, child) { if (data.id == child.id) { // 是否存在非冗余结果集 if (str.indexOf(child.id + ",") == -1) { temp[temp.length] = parseInt(child.id); } amount += parseInt(child.amount); } }); if (str.indexOf(data.id + ",") == -1) { result[i] = " ID：" + data.id + " amount: " + amount; } });
收获园豆：5
0
var arr = [{"id":"1", amount":"2"},{"id":"2", "amount":"2"}，{"id":"1", "amount":"4"} ]; var count_1 = 0; //id为1的总数 var count_2 = 0; //id为2的总数 $.each(arr, function(index, item){ if(item.id==1){ count_1 = count_1 + parseInt(item.amount); }else if(item.id==2){ count_2 = count_2 + parseInt(item.amount); } });
收获园豆：5
