如何在JSON数据中获取上周或上个月的数据？

Question

说，我有一个JSON数据

[
    {
        "transaction": "34",
        "date": "Mar 12 2016 10:00:00 AM"
    }, {
        "transaction": "21",
        "date": "Mar 12 2016 10:00:00 AM"
    }, {
        "transaction": "40",
        "date": "Mar 13 2016 10:00:00 AM"
    }, {
        "transaction": "40",
        "date": "Mar 14 2016 10:00:00 AM"
    }

]

一天内可能会有多笔交易。如何从此JSON数据中获取最近一周或一个月的交易记录？

Answer 1

结帐

数据似乎无效，我将其从Object更改为

我添加了上个月数据的代码，上一周

var data = [{
        "transaction": "34",
        "date": "Apr 12 2017 10:00:00 AM"
    }, {
        "transaction": "21",
        "date": "Apr 12 2017 10:00:00 AM"
    }, {
        "transaction": "40",
        "date": "Mar 15 2016 10:00:00 AM"
    }, {
        "transaction": "50",
        "date": "Jan 13 2017 10:00:00 AM"
    }, {
        "transaction": "40",
        "date": "Mar 13 2017 10:00:00 AM"
    }, {
        "transaction": "40",
        "date": "Mar 14 2016 10:00:00 AM"
    }];

//It will return dates diff in no. if months
function monthDiff(d1, d2) {
    var months;
    months = (d2.getFullYear() - d1.getFullYear()) * 12;
    months -= d1.getMonth() + 1;
    months += d2.getMonth(); 
    return months <= 0 ? 0 : months;
}
//It will gets the last month date
function getLastMonth(){
var x = new Date();
  x.setDate(1);
  x.setMonth(x.getMonth()-1);
  return x;
}
var prevMonthDate = getLastMonth();
var lastMonthData = data.filter(function(v){
 return monthDiff(new Date(v.date),prevMonthDate) < 1;
});

//This is the data for last one Month
console.log(lastMonthData);

//It will return dates diff in no. if Weeks
function weekDiff(d1,d2){
var dif = Math.round(d1-d2);
return Math.ceil(dif/1000/60/60/24/7);
}
//It will gets the last week date
function getLastWeek(){
    var today = new Date();
    var lastWeek = new Date(today.getFullYear(), today.getMonth(), today.getDate() - 7);
    return lastWeek ;
}
var prevWeekDate = getLastWeek();
var lastWeekData = data.filter(function(v){
 return weekDiff(new Date(v.date),prevWeekDate) == 1;
});
//This is the data for last one Week
console.log(lastWeekData);

<强> Working example in Fiddle