Learning to extract information from a JSON file using JavaScript

There is a json file containing the following object:

{
	"fontFamily": "Roboto",
	"color": "red",
	"backgroundColor": "green",
	"textForExample": "Hello world i'm a text that's used to display an exemple for my creator."
}

However, when attempting to parse it, an error occurs in the console stating: "infosFile.json:2 Uncaught SyntaxError: Unexpected token ':'", and further attempts to use it in JavaScript result in the message: "infosFile is not defined". The source of the problem is unclear.

javascriptjsonparsing

Answer №1

Your JSON file is in good shape. Double-check its validity with this link:

If you're facing issues reading JSON from your computer using JavaScript, it might be because NodeJS is not installed. You can get NodeJS from this link: https://nodejs.org/en/

To read JSON data using NodeJS, use the following snippet.

const fs = require('fs');

let rawdata = fs.readFileSync('<path/yourFileName>.json');
let data = JSON.parse(rawdata);
console.log(data);

Answer №2

Attempt

const data = require('dataFile.json');

console.log(JSON.parse(data)) // is expected to display correct information

Answer №3

Ensure that the path to your JSON file is correct

Utilize require("") to access your JSON file and enclose the file path in double quotes

Use JSON.parse() to parse and store the data from the file into a variable

const json_file = require("./json/test.json");
const data = JSON.parse(json_file);

You can also convert it to a string using

const data_stringified = JSON.stringify(data);

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