How to loop through a JSON object with typescript Angular2

Question

I am new to Angular2 and I am trying to loop through a JSON object that I am getting back from a GET request but can t work it out    My JSON object         Results             Time   2017-02-11T08 15 01 000 00 00           Id   data-mopdsjkajskda           AuthorId   58fSDNJD                   Time   2017-03-11T06 23 34 000 00 00           Id   data-2371212hjb1           AuthorId   43555HHHJ                   Time   2017-04-11T07 05 11 000 00 00           Id   data-kjskdha22112           AuthorId   XDSJKJSDH             Part of my Angular script   interface res       Time  string      Id  string      AuthorId  string    export class AppComponent       results  res      constructor private  httpservice  HTTPService         this  httpservice getQuery   subscribe          data   gt                this results   data Results                    error   gt  console log error                gt  console log  Done              I do get the data back - which is great  However  I want to push the Ids into an array  In Javascript I would do this    var ids        for  i   0  i  lt  data Results length  i          ids push data Results i  Id      The array after the push    ids     data-mopdsjkajskda    data-2371212hjb1    data-kjskdha22112      I am struggling to find a way to achieve the same results with Angular2  Any help would be greatly appreciated

User · Accepted Answer

Assuming your json object from your GET request looks like the one you posted above simply do:

let list: string[] = [];

json.Results.forEach(element => {
    list.push(element.Id);
});

Or am I missing something that prevents you from doing it this way?

User · Answer

ECMAScript 6 introduced the let statement  You can use it in a for statement   var ids string        for let result of this results      ids push result Id

[json] How to loop through a JSON object with typescript (Angular2)

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