How to access array state or json data on react native?

Question

I have state with

data: [
  { 'keya': 'Quando analisa','index':0 },
  { 'keyb': 'Modelo de texto','index':1 },
  { 'keyc': 'Parte sofreu alteraes','index':2 },
  { 'keyd': 'Todos os geradores','index':3 },
],

Want to access index. Tried

this.state.data.index

but not getting index value. How to access index?

Have you tried this.state.data[index]?

Tholle
– Tholle

2018-07-10 13:09:12 +00:00
Commented Jul 10, 2018 at 13:09 — Tholle
– Tholle, Commented Jul 10, 2018 at 13:09

Ankit Agarwal · Accepted Answer · 2018-07-10 13:08:21Z

2

Your this.state.data is a array so you either need to loop through the array to get the index value and use it to access all the objects with index property like:

for(var i=0; i<this.state.data.length; i++){
  console.log(this.state.data[i].index);
}

Or you need to explicitly define the index value as this.state.data[0].index to get the index value of object at index 0 and so on.

answered Jul 10, 2018 at 13:08

Ankit Agarwal

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2 Comments

Ankit Agarwal Over a year ago

@ShibinRajuMathew glad to help

R9102 Over a year ago

use map instead of for loop

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