Using Node.JS, how do I read a JSON file into (server) memory?
Sync:
var fs = require('fs');var obj = JSON.parse(fs.readFileSync('file', 'utf8'));Async:
var fs = require('fs');var obj;fs.readFile('file', 'utf8', function (err, data) { if (err) throw err; obj = JSON.parse(data);});
The easiest way I have found to do this is to just use require and the path to your JSON file.
For example, suppose you have the following JSON file.
test.json
{ "firstName": "Joe", "lastName": "Smith"}You can then easily load this in your node.js application using require
var config = require('./test.json');console.log(config.firstName + ' ' + config.lastName);
Asynchronous is there for a reason! Throws stone at @mihai
Otherwise, here is the code he used with the asynchronous version:
// Declare variablesvar fs = require('fs'), obj// Read the file and send to the callbackfs.readFile('path/to/file', handleFile)// Write the callback functionfunction handleFile(err, data) { if (err) throw err obj = JSON.parse(data) // You can now play with your datas}