Some specifice range of date not sorting in Ionic typeScript

Issue

Date b/w 26 April 2020 to 30 April 2020 is not sorting properly weird ahh okay..

1) I am having a array like

[
  {
    "dateAndTime": "05/05/2020 09:00:00"
  },
  {
    "dateAndTime": "26/04/2020 09:00:00"
  },
  {
    "dateAndTime": "25/05/2020 09:00:00"
  }
]

2) Sorting code

         this.myArray.sort((a: MyDateClass ,b: MyDateClass) => (b.dateAndTime <= a.dateAndTime ? -1 : 1) );

3) export class

export class MyDateClass {
 public dateAndTime: Date;
}

4) Expected output

25/05/2020 09:00:00
05/05/2020 09:00:00
26/04/2020 09:00:00

5) Getting output

26/04/2020 09:00:00
05/05/2020 09:00:00
05/05/2020 09:00:00

Some extra cases if I include array date 28,29,26,27,30 April it will sorting right like 26,27,28,29,30

What is wrong with specific range of date b/w 26 to 30 April ?

Note: This is Ionic 3 and this issue tested in safari, Firefox, Chrome

Updating I also try below mention possible solution but latest time not sorting.

 let data=[ { "dateAndTime": "05/04/2020 09:00:00" }, { "dateAndTime": "05/04/2020 09:10:00" }, { "dateAndTime": "05/04/2020 09:09:22" },{ "dateAndTime": "05/05/2020 09:00:00" }, { "dateAndTime": "05/05/2020 09:09:22" }];
let result =  data.sort((a,b) => {
  let aa = new Date(a.dateAndTime.slice(0,10).split('/').reverse().join('/'));
  let bb = new Date(b.dateAndTime.slice(0,10).split('/').reverse().join('/'));
  return (bb <= aa ? -1 : 1);
  // return (aa <= bb ? 1 : -1);
});
console.log('Sorted___', result);

Output

0: Object { dateAndTime: "05/05/2020 09:00:00" }

1: Object { dateAndTime: "05/05/2020 09:09:22" } //This will be come at place of object 0:first

2: Object { dateAndTime: "05/04/2020 09:00:00" }

3: Object { dateAndTime: "05/04/2020 09:10:00" }  // here this will be come at place of object 2:

4: Object { dateAndTime: "05/04/2020 09:09:22" }

Solution

Seems this is due to invalid date

var data=[{ "dateAndTime": "05/04/2020 09:00:00" },{ "dateAndTime": "05/04/2020 09:10:00" },{ "dateAndTime": "05/04/2020 09:09:22" }, { "dateAndTime": "05/05/2020 09:00:00" }, { "dateAndTime": "05/05/2020 09:09:22" }];

result = data.sort((a,b)=>{
  aa = new Date(a.dateAndTime.slice(0,10).split('/').reverse().join('/') + a.dateAndTime.slice(10));
  bb = new Date(b.dateAndTime.slice(0,10).split('/').reverse().join('/') + b.dateAndTime.slice(10));
  return bb - aa;
});

console.log(result);

Answered By - Rajan