How to push data to array, When loop object

Question

I want to loop object result from API, And push it in to array.

historys: any = [];

Loop.

Object.keys(response['orderdetail']).forEach(function(index, key) {
  console.log(key, response['orderdetail'][index])
  this.historys.push(response['orderdetail'][index]);
});

Look like this.historys is not historys: any = [];, How to do this.

What does this refers to in this.historys.push? Where have you defined historys? — Satpal
– Satpal, Commented May 4, 2017 at 9:11
actually first param to callback of forEach is not index but element and second one is index — binariedMe
– binariedMe, Commented May 4, 2017 at 9:12

MrCode · Accepted Answer · 2017-05-04 09:12:36Z

2

This issue is in the foreach function, you've lost your this context and it has changed. You can pass the context as an argument to foreach.

Object.keys(response['orderdetail']).forEach(function(index, key) {
  console.log(key, response['orderdetail'][index])
  this.historys.push(response['orderdetail'][index]);
}, this);
// ^^^^ this will keep the this context

answered May 4, 2017 at 9:12

MrCode

64.6k10 gold badges95 silver badges114 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

How to push data to array, When loop object

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related