Load a JSON file into a JS object

I try to load a json file into a JavaScript var but it just doesn't work out.

var jsonString = JSON.stringify('./test.json');
var obj = JSON.parse(jsonString);

console.log(obj.details.ProductID);

it says that it can't read property ProductID of undefined.

What am I doing wrong here ?

You need to make an AJAX call to get the file. $.getJSON was intended for exactly this purpose:

$.getJSON('./test.json', function(obj) {
    console.log(obj.details.ProductID);
});

Load a JSON file into a JS object, Collaborating JSON files with Node.js makes it simple to ensure that the The code associated with using the built-in global JSON Object for� The JSON Format Evaluates to JavaScript Objects. The JSON format is syntactically identical to the code for creating JavaScript objects. Because of this similarity, a JavaScript program can easily convert JSON data into native JavaScript objects.

If you are using jQuery:

$.getJSON( "/test.json", function( obj ) {
  console.log(obj.details.ProductID);
});

How to Use JSON files in Node.js, The simplest way to read a JSON file is to require it. Passing require() with the path to a JSON file will synchronously read and parse the data into a JavaScript object. In this tutorial, we will see how to Load JSON file locally using pure Javascript. the proper way to include or load the JSON file in a web application, Instead of using JQuery we'll The correct method using XMLHttpRequest JavaScript Alternative To jQuery's Having a pure javascript alternative t

JSON.stringify() first argument needs to be a valid JSON string, not a file.

You need to use AJAX to retrieve file from server:

$.getJSON('./test.json', function(responseObject){
    var obj = responseObject
    console.log(obj)
})

Read/Write JSON Files with Node.js | by Osio Labs, In fact, what this is not actually loading a JSON document but creating a Javascript object. This technique will not work for true JSON files. After the file has been read from disk, we run the then function with the response as a parameter. To get the JSON data from the response, we execute the json () function. The json () function also returns a promise. This is why we just return it and chain another then function.

In case it helps anyone, just use this:

const dataObjectFromFile = require('./path/to/datafile.json');

Load JSON file locally using pure Javascript by Rich on CodePen, To read the JSON data from the file we can use the Node.js fs module. The function is particularly useful when your application has to load configuration converts it to ASCII text, and parses the actual JSON data in to a JavaScript object. I am using JSON to transfer data. What do I need in my HTML page to read a file with Ajax that only includes one JSON object into my script? Do I need jQuery too, or is it possible to load that JSON file with Ajax? Is it different on different browsers?

Reading and Writing JSON Files with Node.js, JSON is a text-based data format following JavaScript object syntax, which A JSON object can be stored in its own file, which is basically just a text Try loading this up and then accessing data inside the variable via your� Just use let data = require('./yourjsonfile.json') and off you go (with the booknote that if the performance of require is impacting your code, you have problems well beyond "wanting to load a .json file") – Mike 'Pomax' Kamermans Feb 11 '19 at 3:12

Working with JSON, In this tutorial, you'll learn how to read a JSON file with your JavaScript a file like Duration: 2:04 Posted: Sep 18, 2019 But the json file is not loaded properly (unexpected token ':') and the scene.x reference is also probably not the way it should be done. Is it possible to refer to the data directly? Or does it need to be loaded by some http request?

How To Read a JSON File With JavaScript, So, how do I load a JSON file in HTML/JS and save it to a variable? used with JSON.stringify() to store objects; can be a little dangerous if you� The above example was simple in terms of accessing the JavaScript object, because we set the XHR request to convert the JSON response directly into a JavaScript object using: request.responseType = 'json'; But sometimes we aren't so lucky — sometimes we receive a raw JSON string, and we need to convert it to an object ourselves.

Comments
  • load your file seperately, take it into a variable, and then stringify it?
  • @Satej S That would give me a string, not an object ?
  • Where have you read that JSON.stringify loads a file?
  • @Vohuman think I misred it
  • Can you add the JSON you are trying to read to your question?
  • What should I do if I want json file to set among js tags on HTML between <script></script> tags?