Your JSON is malformed. Try this:
var pets = '{"pets":[{"name":"jack"},{"name":"john"},{"name":"joe"}]}';
var arr = JSON.parse(pets);
alert(arr.pets[0].name);
W3Schools
w3schools.com › js › js_json_arrays.asp
JSON Arrays
In JSON, array values must be of type string, number, object, array, boolean or null. In JavaScript, array values can be all of the above, plus any other valid JavaScript expression, including functions, dates, and undefined.
Top answer 1 of 6
62
Your JSON is malformed. Try this:
var pets = '{"pets":[{"name":"jack"},{"name":"john"},{"name":"joe"}]}';
var arr = JSON.parse(pets);
alert(arr.pets[0].name);
2 of 6
18
JSon arrays are bounded by [] brackets
try
pets = '[{"name":"jack"},{"name":"john"},{"name":"joe"}]';
also you forgot to use "'s on the last property name.
javascript - Convert array to JSON - Stack Overflow
I have an Array var cars = [2,3,..] which holds a few integers. I've added a few values to the array, but I now need to send this array to a page via jQuery's .get method. How can I convert it to a... More on stackoverflow.com
How to return a Json Array
Hey Everyone! I’m going crazy trying to return an array of Objects with the Function node as it either tells me that “All returned items have to contain a property named JSON” or that the return type must be an array of objects. Below is the JSON file I currently get. More on community.n8n.io
1
0
October 12, 2021QUESTION - How to asign entire JSON object array to a single variable in Javascript?
The easiest thing you can do is create a separate file for your JSON which you would link to from your html using a More on reddit.com
13
9
August 2, 2023Converting JSON value into JavaScript array - Stack Overflow
Is this what you are loking for ? You can map on your array and just extract the role attribute of each datum. const jsonString = ... More on stackoverflow.com
Videos
10:48
Explore JSON and how you can get JSON data as a JavaScript Object ...
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JavaScript Array Methods You Should Know | JSON | Object Arrays ...
14:13
Easily Master JSON Object And Array - Code With Mark - YouTube
09:52
Easy JavaScript - How to parse an array of JSON data (42) - YouTube
09:24
JavaScript Tip: Converting an Object to an Array - YouTube
02:33
Converting JSON Array to JavaScript Array: A Comprehensive Guide ...
MDN Web Docs
developer.mozilla.org › en-US › docs › Web › JavaScript › Reference › Global_Objects › Array
Array - JavaScript | MDN
3 weeks ago - The Array object, as with arrays in other programming languages, enables storing a collection of multiple items under a single variable name, and has members for performing common array operations.
GeeksforGeeks
geeksforgeeks.org › javascript › what-is-json-array
What is JSON Array? - GeeksforGeeks
July 23, 2025 - JSON Array is almost the same as JavaScript Array.
MDN Web Docs
developer.mozilla.org › en-US › docs › Learn_web_development › Core › Scripting › JSON
Working with JSON - Learn web development | MDN
If you load this JSON in your JavaScript program as a string, you can parse it into a normal object and then access the data inside it using the same dot/bracket notation we looked at in the JavaScript object basics article. For example: ... First, we have the variable name — superHeroes. Inside that, we want to access the members property, so we use .members. members contains an array populated by objects.
Top answer 1 of 12
804
Script for backward-compatibility: https://github.com/douglascrockford/JSON-js/blob/master/json2.js
And call:
var myJsonString = JSON.stringify(yourArray);
Note: The JSON object is now part of most modern web browsers (IE 8 & above). See caniuse for full listing. Credit goes to: @Spudley for his comment below
2 of 12
77
I made it that way:
if I have:
var jsonArg1 = new Object();
jsonArg1.name = 'calc this';
jsonArg1.value = 3.1415;
var jsonArg2 = new Object();
jsonArg2.name = 'calc this again';
jsonArg2.value = 2.73;
var pluginArrayArg = new Array();
pluginArrayArg.push(jsonArg1);
pluginArrayArg.push(jsonArg2);
to convert pluginArrayArg (which is pure javascript array) into JSON array:
var jsonArray = JSON.parse(JSON.stringify(pluginArrayArg))
PTC Community
community.ptc.com › t5 › ThingWorx-Developers › Working-with-JSON-and-Arrays › td-p › 836109
Solved: Working with JSON and Arrays - PTC Community
November 9, 2022 - Opposite, when you declare your object directly in Javascript, this results in a pure Javascript object (no Java JSONObject "wrapper") which has access directly to any method you'd expect in Javascript syntax. ... Article - "Error when pushing to JSON in ThingWorx Service": https://www.ptc.com/en/support/article/CS284117 ... Hello, thank you for your answer. I understand that it is not possible to use .push() on an object. However if you look closely on the Input parameter, which is a JSON type, it includes the exact same "PlatformData" array as the variable in the code.
Micro Focus
microfocus.com › documentation › silk-performer › 205 › en › silkperformer-205-webhelp-en › GUID-0847DE13-2A2F-44F2-A6E7-214CD703BF84.html
JSON Array Structure
Describes what a JSON array is, how it is structured, and what data types are allowed in a JSON array.
Boot.dev
blog.boot.dev › javascript › converting-an-array-to-json-object-in-javascript
Converting an Array to a JSON Object in JavaScript | Boot.dev
October 1, 2022 - The JSON.stringify() method converts a JavaScript object, array, or value to a JSON string.
JSON Schema
json-schema.org › understanding-json-schema › reference › array
JSON Schema - array
Arrays are used for ordered elements.
Reddit
reddit.com › r/learnjavascript › question - how to asign entire json object array to a single variable in javascript?
r/learnjavascript on Reddit: QUESTION - How to asign entire JSON object array to a single variable in Javascript?
August 2, 2023 -
I am working on an HTML project that utilizes data stored inside a separate JSON file. I want to assign the entire object array to a single variable in JavaScript without any alterations.
I have already tried using the "fetch" and "parse" methods, but unfortunately, I have not succeeded yet. I feel like there must be a straightforward solution that I am not aware of, considering JSON and JavaScript have practically the same syntax. However, I am facing significant challenges in achieving this.
I need to pursue this approach because writing the entire object array inside the HTML file would significantly increase its line count by the hundreds, which I don't want. My intention is to store the data in a variable called "pokemon_list," which will be later iterated by "for" loops.
Here is a small excerpt from the JSON file:
[
{
"name": "bulbasaur",
"type": "grass/poison"
},
{
"name": "ivysaur",
"type": "grass/poison"
},
{
"name": "venusaur",
"height": "grass/poison"
}
]
Top answer 1 of 5
6
The easiest thing you can do is create a separate file for your JSON which you would link to from your html using a
2 of 5
3
Something like this https://jsfiddle.net/mjbk6tgo/1/ . (the example won't work because i don't have the text file). If it's not working for you it's probably because you're not fetching correctly: it's an asynchronous call so you have to await, and then read the content to extract the text.
ReqBin
reqbin.com › code › javascript › n2ek7onb › javascript-array-to-json-example
How do I convert JavaScript array to JSON?
July 27, 2023 - To convert a JavaScript array to a JSON data string, you can use the JSON.stringify(value, replacer, space) method. The optional replacer parameter is a function that can alter the behavior of the serialization process.
W3Schools
w3schools.com › js › js_json.asp
JavaScript JSON
JSON makes it possible to store JavaScript objects as text. Text that defines an employees object with an array of 3 employee objects:
MDN Web Docs
developer.mozilla.org › en-US › docs › Web › JavaScript › Reference › Global_Objects › JSON › stringify
JSON.stringify() - JavaScript | MDN
The value to convert to a JSON string. ... A function that alters the behavior of the stringification process, or an array of strings and numbers that specifies properties of value to be included in the output. If replacer is an array, all elements in this array that are not strings or numbers ...
Quora
quora.com › How-do-you-push-data-into-a-JSON-array-JavaScript-jQuery-JSON-and-development
How to push data into a JSON array (JavaScript, jQuery, JSON, and development) - Quora
Answer (1 of 3): You can use the native JSON.parse function to convert the JSON to an object or array, make any changes to the array/object, then convert that array/object back into JSON with the native JSON.stringify function Example: [code]let ...
MDN Web Docs
developer.mozilla.org › en-US › docs › Web › JavaScript › Reference › Global_Objects › JSON › parse
JSON.parse() - JavaScript | MDN
The Object, Array, string, number, boolean, or null value corresponding to the given JSON text. ... Thrown if the string to parse is not valid JSON. JSON.parse() parses a JSON string according to the JSON grammar, then evaluates the string as if it's a JavaScript expression.
RestfulAPI
restfulapi.net › home › json › json array
JSON Array - Multi-dimensional Array in JSON
November 4, 2023 - Arrays in JSON are almost the same as arrays in JavaScript.
JSON
json.org
JSON
Java, JavaScript, Perl, Python, and many others. These properties make JSON an ideal data-interchange language. ... A collection of name/value pairs. In various languages, this is realized as an object, record, struct, dictionary, hash table, keyed list, or associative array...
Top answer 1 of 4
8
Use JSON.parse and then reduce to get what you want,
var s = `[{"role":"noi_user"},{"role":"bert_user"}]`
var arr = []
try {
arr = JSON.parse(s).reduce((acc, val)=>[...acc, val.role], [])
} catch (e){
console.log("Invalid json")
}
console.log(arr) 2 of 4
2
Is this what you are loking for ? You can map on your array and just extract the role attribute of each datum.
const jsonString = ...
const data = JSON.parse(jsonString).map(data => data.role);
console.log(JSON.stringify(data, null, 2));
JSON uses double quotes to delimit strings and field names.