Angular 4 - Get Value from JSON by Key

Question

I want to get the value by the key of this json. The key is description and i want it in my console.log, i don't really get how to get this value, the filtering before worked fine.

{
    "id": "149",
    "description": "Try"
}

Thanks!

Rupal · Accepted Answer · 2018-02-01 12:03:27Z

2

First You need to parse it using JSON.parse. Then using . or [] you can access. For Ex:-

var a = '{
    "id": "149",
    "description": "Try"
}'

b = JSON.parse(a)

b['description'] or b.description FOr more reference you can study here

answered Feb 1, 2018 at 12:03

Rupal

1,1096 silver badges17 bronze badges

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

Comments

Vivek Doshi · Accepted Answer · 2018-02-01 12:15:35Z

2

const dummy = {
  id : '1',
  description : 'Wow awesome'
};

console.log(dummy.description);

//-------------------------------------

const descData = dummy.description;

console.log(descData);

variableName['description'] or variableName.description

edited Feb 1, 2018 at 12:15

answered Feb 1, 2018 at 12:00

Vivek Doshi

58.8k12 gold badges120 silver badges126 bronze badges

9 Comments

muelleste Over a year ago

But when i make: const test = ['description']. console.log got -> undefinied. Thats why i open up this threat

muelleste Over a year ago

My use-case looks like, i got a big json file about 5000 lines long. Since one hour I made filters to get this tiny snippet above and now I want to get in my const the value of the key "description" to fill up my table on my html template.

Vivek Doshi Over a year ago

@muelleste , please check the snippet, i think that will clear your doubts

muelleste Over a year ago

console.log('treeNodes:' + JSON.stringify(treeNodes)); console.log(treeNodes.description); treeNodes:"{\"id\":\"147\",\description\":\"Try\"}" test.component.ts:42:13 undefined . That's my result

Vivek Doshi Over a year ago

try treeNodes.description OR var data = JSON.parse(treeNodes); console.log(data.description);

|

Collectives™ on Stack Overflow

Angular 4 - Get Value from JSON by Key

2 Answers 2

Comments

9 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

9 Comments

Your Answer

Sign up or log in

Post as a guest

Related