我讨厌这个对象数组,每个对象都有一个日期,我希望能够将这些对象分组为几个月。有没有办法转换它,
var data = [
{ date: "2016-08-13",...},
{ date: "2016-07-23",...},
{ date: "2016-08-11",...},
{ date: "2016-08-10",...},
{ date: "2016-07-20",...},
{ date: "2016-07-21",...},
]
这样的事情
var data = [
[{ date: "2016-08-13",...},
{ date: "2016-08-11",...},
{ date: "2016-08-10",...}],
[{ date: "2016-07-20",...},
{ date: "2016-07-21",...},
{ date: "2016-07-23",...}[
]
答案 0 :(得分:3)
您可以在哈希表中获取年份和月份组的字符串的一部分,并为每个组获取一个新数组并将此数组放入结果集。
var data = [{ date: "2016-08-13" }, { date: "2016-07-23" }, { date: "2016-08-11" }, { date: "2016-08-10" }, { date: "2016-07-20" }, { date: "2016-07-21" }],
hash = Object.create(null),
result = [];
data.forEach(function (o) {
var key = o.date.slice(0, 7);
if (!hash[key]) {
hash[key] = [];
result.push(hash[key]);
}
hash[key].push(o);
});
console.log(result);

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答案 1 :(得分:2)
您可以使用array#reduce
根据月份对对象进行分组。
var data = [{ date: "2016-08-13"},{ date: "2016-07-23"},{ date: "2016-08-11"},{ date: "2016-08-10"},{ date: "2016-07-20"},{ date: "2016-07-21"}];
var result = data.reduce((res,obj) => {
let [year, month, day] = obj.date.split('-');
if(res[month])
res[month].push(obj);
else
res[month] = [obj];
return res;
},{});
console.log(Object.values(result));
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var data = [{ date: "2016-08-13"},{ date: "2016-07-23"},{ date: "2016-08-11"},{ date: "2016-08-10"},{ date: "2016-07-20"},{ date: "2016-07-21"}];
var result = data.reduce((res,obj) => {
let [year, month, day] = obj.date.split('-');
res[month] = res[month] || [];
res[month].push(obj);
return res;
},{});
console.log(Object.values(result));
答案 2 :(得分:0)
var data = [
{ date: "2016-08-13"},
{ date: "2016-07-23"},
{ date: "2016-08-11"},
{ date: "2016-08-10"},
{ date: "2016-07-20"},
{ date: "2016-07-21"},
];
data.sort(function(a, b) {
var aDate = new Date(a.date);
var bDate = new Date(b.date);
return bDate - aDate;
});
console.log(data);
答案 3 :(得分:0)
按月分组:
var groupedData = [];
for(i=0;i<12;i++)
groupedData.push([]);
for(var index = 0;index<data.length;index++){
var date = new Date(data[index].date);
groupedData[date.getMonth()] = data[index];
}
答案 4 :(得分:0)
var data = [
{ date: "2016-08-13"},
{ date: "2016-07-23"},
{ date: "2016-08-11"},
{ date: "2016-08-10"},
{ date: "2016-07-20"},
{ date: "2016-07-21"}
];
var monthDateIndex = {
"01": "Jan",
"02" : "Feb",
"03" : "mar",
"04" : "april",
"05" : "may",
"06" : "june",
"07" : "july",
"08" : "august",
"09" : "sept",
"10" : "oct",
"11" : "nov",
"12" : "dec"
}
let newDataObj = [];
Object.keys(monthDateIndex).map(monthNum => {
let monthObj = [];
data.map(dateObj => {
if(monthNum == dateObj.date.split("-")[1]) {
monthObj.push(dateObj);
}
});
if(monthObj.length != 0) newDataObj.push(monthObj);
});