How to Parse JSON array in node js

Question

I was trying below code,where body is response from HTTP GET. When I tried to run it, I am getting below error.

Cannot read property 'po_number' of undefined

{
    "d": {
        "results": [
            {
                "po_number": "PO1001",
                "product_id": "PD1001",
                "message": "Exists",
                "timestamp": "2016-05-01" 
            }
        ]
    }
}

How to access po_number

var profile = JSON.parse(body);
console.log("profile: "+ profile.results.po_number);

I am getting undefined when i access above code

profile.results it's an array not an object, you have to use something like profile.results[index].po_number, profile.results[0].po_number for example. — Titus
– Titus, Commented Oct 3, 2017 at 10:57

Suren Srapyan · Accepted Answer · 2017-10-03 10:58:16Z

6

You missed one step. You missed the object d and that the results is an array. So first access the 0 indexed item.

You need to get via profile.d.results[0].po_number.

const jsonObj = `{ "d": {
     "results": [
      {
          "po_number": "PO1001",
          "product_id": "PD1001",
          "message": "Exists",
          "timestamp": "2016-05-01" 
      }]
}}`;

var profile = JSON.parse(jsonObj);
console.log(profile.d.results[0].po_number);

answered Oct 3, 2017 at 10:58

Suren Srapyan

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Comments

coder-nazi · Accepted Answer · 2017-10-03 11:04:33Z

0

results is an array.

To access po_number, you'll need to do something like:

console.log("profile: "+ profile.results[0].po_number)

Make sure you dynamically iterate the array to access that value.

Example (in underscore/lodash) :

_.each(profile.results, (result) => { 
  console.log("profile: " + result.po_number);
});

answered Oct 3, 2017 at 11:04

coder-nazi

1

Comments

Phani Kumar M · Accepted Answer · 2017-10-03 11:16:01Z

0

var profile = JSON.parse(JSON.stringify(data[0]))
console.log("profile: "+ profile.po_number)

edited Oct 3, 2017 at 11:16

Phani Kumar M

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answered Oct 3, 2017 at 11:01

Koushik

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1 Comment

Andy Over a year ago

Why would you stringify the data then parse it?

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