All current browsers have native JSON support built in. So as long as you're not dealing with prehistoric browsers like IE6/7 you can do it just as easily as that:

var j = {
  "name": "binchen"
};
console.log(JSON.stringify(j));

Answer from Andris on Stack Overflow
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Transform
transform.tools › js-object-to-json
JavaScript to JSON
An online REPL for converting JS Object to JSON.
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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 (either primitives or wrapper objects), including Symbol values, are completely ignored.
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ConvertSimple
convertsimple.com › convert-javascript-to-json
Convert Javascript Object to JSON Online - ConvertSimple.com
October 17, 2020 - Paste your JavaScript Object input into the left input box and it will automatically convert it into JSON. The JSON output is the box to the right.
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W3Schools
w3schools.com › js › js_json_objects.asp
JSON Object Literals
JSON cannot be an object. JSON is a string format. The data is only JSON when it is in a string format. When it is converted to a JavaScript variable, it becomes a JavaScript object.
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JSON
json.org
JSON
JSON is a text format that is completely language independent but uses conventions that are familiar to programmers of the C-family of languages, including C, C++, C#, 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.
Find elsewhere
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Convertinator
convertinator.app › tools › data-converters › js-object-to-json
Convert JavaScript Objects to JSON Online | JSON Converter Tool | Convertinator
Easily convert your JavaScript objects into JSON format. This tool simplifies the process of transforming complex data structures into a universally readable JSON representation, making data sharing and storage a breeze.
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MDN Web Docs
developer.mozilla.org › en-US › docs › Learn_web_development › Core › Scripting › JSON
Working with JSON - Learn web development | MDN
In JavaScript, the methods for parsing and generating JSON are provided by the JSON object. Note: Converting a string to a native object is called deserialization, while converting a native object to a string so it can be transmitted across the network is called serialization.
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Medium
medium.com › geekculture › json-object-v-javascript-object-f00ae788cc1f
JSON Object v. JavaScript Object. Recently in my job search, I was being… | by Alyssa E Easterly | Geek Culture | Medium
April 6, 2021 - JSON.stringify is turning our ‘data’ JavaScript object into a JSON Object · A Javascript object has a similar syntax to JSON, it uses curly braces and key/value pairs.
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Transform
transform.tools › json-to-typescript
JSON to TypeScript
An online playground to convert JSON to TypeScript
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ReqBin
reqbin.com › code › javascript › x1ezvres › javascript-object-to-json-example
How do I convert object to JSON in JavaScript?
If you don't pass a "space" parameter, the JSON.stringify() method will output a minified JSON. In this JavaScript Object to JSON example, we serialize the JavaScript object to JSON data string and pretty-print the generated JSON.
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GeeksforGeeks
geeksforgeeks.org › javascript › how-to-convert-json-string-to-array-of-json-objects-using-javascript
Convert JSON String to Array of JSON Objects in JavaScript - GeeksforGeeks
August 5, 2025 - The eval() method can technically be used to convert a JSON string into an array of objects, it is not recommended due to security risks. Using eval() allows the execution of arbitrary JavaScript code, which can lead to vulnerabilities if the JSON string contains malicious code.
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PHPpot
phppot.com › javascript › json-to-javascript-object
Convert JSON String to JavaScript Object - PHPpot
JSON.parse function is used to convert a JSON string into a JavaScript object.
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Wtools
wtools.io › convert-js-object-to-json
Convert Javascript object to JSON Online | WTOOLS
Free tool for online converting Javascript literal object into JSON, generate JSON from JS object quickly.
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W3Schools
w3schools.com › js › js_json.asp
JavaScript JSON
JavaScript has a built in function for converting JSON strings into JavaScript objects: ... You can receive pure text from a server and use it as a JavaScript object. You can send a JavaScript object to a server in pure text format.
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npm
npmjs.com › package › json-server
json-server - npm
March 23, 2026 - _where accepts a JSON object and overrides normal query params when valid. GET /posts?_where={"or":[{"views":{"gt":100}},{"author":{"name":{"lt":"m"}}}]} DELETE /posts/1?_dependent=comments · JSON Server automatically serves files from the ./public directory. To serve additional static directories: json-server db.json -s ./static json-server db.json -s ./static -s ./node_modules · Static files are served with standard MIME types and can include HTML, CSS, JavaScript, images, and other assets.
      » npm install json-server
    
Published   Mar 23, 2026
Version   1.0.0-beta.15