Parse JSON file containing multiple objects - json

Question

I have a JSON file that contains multiple objects of the same structure that look like this:
{
"id": "123",
"type": "alpha"
}
{
"id": "321",
"type": "beta"
}
I'm using node.js to read the file.
fs.readFile(__dirname + "/filename.json", 'utf8', function(err, data) {
var content = JSON.parse(JSON.stringify(data));
If I do a console.log(content) things look good. I see the content of the json file. I'm trying to iterate over each object but I'm not sure how to do that. I've tried using
for(var doc in content)
but the doc isn't each object as I was expecting. How do I loop over the content to get each object in a json format so that I can parse it?

Answer 1

If content is an array, you can use
content.forEach(function (obj, index) { /* your code */ })
See documentation for Array.prototype.forEach()

Answer 2

if you need to just iterate, a forEach loop would work or a normal for loop :
for(var i = 0; i<content.length(); i++){
//perform whatever you need on the following object
var myobject = content[i];
}

Answer 3

Depend of the files, the two current answer (Osama and Daniel) assume you have a JSON Array:
[
{
"id": "123",
"type": "alpha"
},
{
"id": "456",
"type": "beta"
}
]
In which case, you can use any array iterator:
var async = require('async'),
content = require(__dirname + "/filename.json");
async.each(content, function (item, callback) {
//...
});
But in your case, it seems to not be JSON (no bracket to indicate array, and no comma to separate the objects), so in the case JSON.parse doesn t throw up any error, you'll need to isolate your objects first:
var fs = require('fs'),
async = require('async');
fs.readFile(__dirname + "/filename.notjson", 'utf8', function(err, data) {
var content = data.split('}');
async.map(content, function (item, callback) {
callback(null, JSON.parse(item));
}, function (err, content) {
console.log(content);
};
});