Ionic 3 how to group array object by date

Ionic Framework ionic-v3
1

Hi,

I have an array and I want to display it by group with label.

Please see the screenshot of the sample array

45%20AM
Screen Shot 2018-08-20 at 11.30.45 AM.png1170×629 146 KB

02%20AM
Screen Shot 2018-08-20 at 11.31.02 AM.png1172×555 80.8 KB

I want to achieve

17%20AM
Screen Shot 2018-08-20 at 11.38.17 AM.png417×598 32.5 KB

2

você pode adicionar a data como a chave do array, por exemplo a data 10/11/2018, na key do array ficaria 20181110, e coloque para ordenar de forma decrescente.

3

I solved it

       let currentLetter = false;
        let currentContacts = [];
        let currentDatas = [];

    for(let i = 0; i < this.dataFinalPota.length; i++) {
        this.ahh = this.dataFinalPota[i].matchTime.slice(0,7);
        if(this.ahh != currentLetter) {
          currentLetter = this.ahh;
          let newGroup = {
                letter: currentLetter,
                contacts: [],
                taes: []
            };
           currentContacts = newGroup.contacts;
           currentDatas = newGroup.taes;
            this.groupedContacts.push(newGroup);
          }
        currentContacts.push(this.ahh);
        currentDatas.push(this.dataFinalPota[i]);
    }
4

The code in the above post has a serious flaw. Controller-level object properties should not churn needlessly within a function. There is no good reason for having this.ahh be an object property. It should instead be lexically scoped.