How can I load a .json file into JavaScript without inserting it directly into the code?

Question

How can I load a .json file into JavaScript without inserting it directly into the code?

Currently, I am dealing with a lengthy JSON snippet that resembles the following:

{
  "section: [
   [stuff]
  ]
}

To incorporate this into my JavaScript code, I currently use the following approach:

var obj = {

  // {All the stuff from above}
}

My goal is to store it in a JSON file that can be locally imported into a JS script and function similarly to this:

var obj = "path/file.json";

and have it perform in the same manner.

javascript json

Answer 1

Answer №1

Utilize AJAX along with fetch to accomplish this task.

const jsonFilePath = "./path/file.json";
fetch(jsonFilePath)
  .then(res => res.json())
  .then(json => {
    console.log(json.section);
  });

Keep in mind: This method only functions with a server. If you are utilizing the file:/// protocol, consider switching to a regular server. For instance, if you have Python installed, you can run the following command in your directory: python3 -m http.server.

An alternative (though not recommended) is creating another JavaScript file for your JSON data. Inside it, define the data as follows:

var obj = {
  "section": {
    ...
  }
}

Then, link this file in your HTML using a script tag before your main script:

<script src="./json-data.js"></script>
<script src="./my-script.js"></script>

In your my-script.js file:

console.log(obj.section); // {...}

Answer 2

Utilize AJAX along with fetch to accomplish this task.

const jsonFilePath = "./path/file.json";
fetch(jsonFilePath)
  .then(res => res.json())
  .then(json => {
    console.log(json.section);
  });

Keep in mind: This method only functions with a server. If you are utilizing the file:/// protocol, consider switching to a regular server. For instance, if you have Python installed, you can run the following command in your directory: python3 -m http.server.

An alternative (though not recommended) is creating another JavaScript file for your JSON data. Inside it, define the data as follows:

var obj = {
  "section": {
    ...
  }
}

Then, link this file in your HTML using a script tag before your main script:

<script src="./json-data.js"></script>
<script src="./my-script.js"></script>

In your my-script.js file:

console.log(obj.section); // {...}

Answer 3

Answer №2

Utilizing async with fetch enables seamless usage without the need for callbacks.

For more comprehensive information, please refer to: https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API/Using_Fetch

async function fetchAndParseJSON() {
  var data = await fetch("/path/to/data.json");
  var jsonData = await data.json();
  // manipulate JSON object as needed
}
fetchAndParseJSON();

Answer 4

Utilizing async with fetch enables seamless usage without the need for callbacks.

For more comprehensive information, please refer to: https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API/Using_Fetch

async function fetchAndParseJSON() {
  var data = await fetch("/path/to/data.json");
  var jsonData = await data.json();
  // manipulate JSON object as needed
}
fetchAndParseJSON();

How can I load a .json file into JavaScript without inserting it directly into the code?

Answer №1

Answer №2

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