How to read an array of JSON objects in Node.js using require('./data.js')

Question

The data stored is in data.js file (not JSON) and it is an array of objects. As an example,

 [
    {"id":"u4cse101", "name":"supriya","batch":"b"},
    {"id":"u4cse102", "name":"rahul", "batch":"a"},
    {"id":"u4cse345", "name":"ahalya", "batch":"a"}
 ]

I tried many methods, but couldn't achieve. Your help will be appreciated. UPDATE: One solution found is have the following in data.js file

JOURNAL = [
  {"x":"y"},
  {"a":"a"}
];
if (typeof module != "undefined" && module.exports)
  module.exports = JOURNAL;

and use the variable JOURNAL in another javascript file directly using require('./data.js'). But I am getting error:

if (typeof module != "undefined" && module.exports)
^^

SyntaxError: Unexpected token if

var fs = require('fs'); var array = JSON.parse(fs.readFileSync('./data.js', 'utf8')); — Pranav C Balan
– Pranav C Balan, Commented Oct 20, 2016 at 5:12
Why not rename the file? JSON should be in data.json, not in data.js - the latter should be a JavaScript file, which JSON only technically is. — Amadan
– Amadan, Commented Oct 20, 2016 at 5:18
I neither want data.json file name or fs module. I have seen some code samples, they do it without these but I am not able to do it. — Sreekumar R
– Sreekumar R, Commented Oct 20, 2016 at 5:51

Mamdouh Saeed · Accepted Answer · 2016-10-20 08:45:07Z

2

you can save your json data file as data.json and use require to import json file

var jsn = require("./data.json");
jsn = JSON.parse(jsn);

//data.json
[
{"x":"y"},
{"a":"a"}
];

answered Oct 20, 2016 at 8:45

Mamdouh Saeed

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Comments

Manish Singh · Accepted Answer · 2016-10-20 05:12:25Z

0

It's easy, you can follow this approach.

var fs = require('fs');
var obj;
fs.readFile('data.js', 'utf8', function (err, data) {
  if (err) throw err;
  obj = JSON.parse(data);
});

Hope it resolve your issue :)

answered Oct 20, 2016 at 5:12

Manish Singh

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Comments

arlendp · Accepted Answer · 2016-10-20 05:40:58Z

0

You can use like this

var fs = require('fs');
fs.readFile('data.js', 'utf8', function(error, data) {
    data = JSON.parse(data);
})
//or
var data = fs.readFileSync('data.js', 'utf8');

answered Oct 20, 2016 at 5:40

arlendp

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Comments

Sreekumar R · Accepted Answer · 2016-10-20 07:40:10Z

0

I solved the problem. The file should be

JOURNAL = [[
  {"x":"y"},
  {"a":"a"}
]];

instead of

JOURNAL = [
  {"x":"y"},
  {"a":"a"}
];

answered Oct 20, 2016 at 7:40

Sreekumar R

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Comments

Abhishek T. · Accepted Answer · 2016-10-22 04:56:03Z

0

data.json file

{
"firstname:"abc",
"lastname":"xyz"
}

And then your route.js file you can include data.json file and print the data value like that:

var fs = require('fs'), obj

// Read the file and send to the callback fucntion
fs.readFile('path of data.json file', fileHandler)

// Write the callback function

function fileHandler(err, data) {

    if (err) throw err
    obj = JSON.parse(data)
    // You can now play with your datas
}

edited Oct 22, 2016 at 4:56

Abhishek T.

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answered Oct 22, 2016 at 4:09

Mital Gajjar

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