JSON.parse(jsonString) is a pure JavaScript approach so long as you can guarantee a reasonably modern browser.

Answer from Jonathan. on Stack Overflow
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TypeScript
typescriptlang.org โ€บ docs โ€บ handbook โ€บ 2 โ€บ objects.html
TypeScript: Documentation - Object Types
In JavaScript, the fundamental way that we group and pass around data is through objects. In TypeScript, we represent those through object types. ... In all three examples above, weโ€™ve written functions that take objects that contain the property name (which must be a string) and age (which must be a number).
Discussions

Convert a string to a JSON object
Iโ€™m working on flipping a string into a JSON object using JavaScript. Can someone provide guidance on the best method for accomplishing this conversion? More on community.latenode.com
๐ŸŒ community.latenode.com
0
October 30, 2024
javascript - Convert JS object to JSON string - Stack Overflow
JSON.stringify(value, replacer, space) value any JavaScript value, usually an object or array. replacer an optional parameter that determines how object values are stringified for objects. It can be a function or an array of strings. space an optional parameter that specifies the indentation of nested structures. If it is omitted, the text will be packed without extra whitespace. If it is a number, it will specify the number of spaces to ... More on stackoverflow.com
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creating an object string without using JSON.stringify
There is currently nothing in your code which would surround the value with double quotes; you destructure the value and then just assign it to the double-quoted key in your accumulator object. Also I assume this is a typo? accum["${key}"] Template literal strings require backticks. If you're trying to replicate JSON.stringify you're going to have to get a good understanding of how different types of value get serialised, and think about how you can differentiate them in your code. More on reddit.com
๐ŸŒ r/learnjavascript
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1
August 28, 2021
Converting a string to JSON javascript
If you're wondering about the "why" of your issue, JSON.parse doesn't work because key: "value" is not valid JSON. Keys must always be encapsulated in a string. What you're receiving appears to just be pure JavaScript of an object. More on reddit.com
๐ŸŒ r/learnprogramming
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March 2, 2019
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Pluralsight
pluralsight.com โ€บ tech insights & how-to guides โ€บ tech guides & tutorials
Convert Strings to JSON Objects in JavaScript with eval() | Pluralsight
March 31, 2025 - The array of objects is now converted to JSON, and it can be sent over to the server to pass the request as a JSON file format using the stringify() function. The eval() function in JavaScript is used to take an expression and return the string.
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Latenode
community.latenode.com โ€บ other questions โ€บ javascript
Convert a string to a JSON object - JavaScript - Latenode Official Community
October 30, 2024 - Iโ€™m working on flipping a string into a JSON object using JavaScript. Can someone provide guidance on the best method for accomplishing this conversion?
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MDN Web Docs
developer.mozilla.org โ€บ en-US โ€บ docs โ€บ Web โ€บ JavaScript โ€บ Reference โ€บ Global_Objects โ€บ JSON โ€บ parse
JSON.parse() - JavaScript | MDN
The JSON.parse() static method parses a JSON string, constructing the JavaScript value or object described by the string. An optional reviver function can be provided to perform a transformation on the resulting object before it is returned.
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W3Schools
w3schools.com โ€บ js โ€บ js_json_parse.asp
JSON.parse()
A common use of JSON is to exchange data to/from a web server. When receiving data from a web server, the data is always a string. Parse the data with JSON.parse(), and the data becomes a JavaScript object.
Find elsewhere
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W3Schools
w3schools.com โ€บ js โ€บ js_json_stringify.asp
JSON.stringify()
JS Examples JS HTML DOM JS HTML Input JS HTML Objects JS HTML Events JS Browser JS Editor JS Exercises JS Quiz JS Website JS Syllabus JS Study Plan JS Interview Prep JS Bootcamp JS Certificate JS Reference ... A common use of JSON is to exchange data to/from a web server. When sending data to a web server, the data has to be a string. You can convert any JavaScript datatype into a string with JSON.stringify().
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MDN Web Docs
developer.mozilla.org โ€บ en-US โ€บ docs โ€บ Web โ€บ JavaScript โ€บ Reference โ€บ Global_Objects โ€บ JSON โ€บ stringify
JSON.stringify() - JavaScript | MDN
If space is anything other than ... representing the given value, or undefined. ... A BigInt value is encountered. JSON.stringify() converts a value to the JSON notation that the value represents....
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ConvertSimple
convertsimple.com โ€บ convert-json-to-javascript
Convert JSON to Javascript Object Online - ConvertSimple.com
October 17, 2020 - Paste your JSON input into the left input box and it will automatically convert it into JavaScript Object. The JavaScript Object output is the box to the right.
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ProxiesAPI
proxiesapi.com โ€บ articles โ€บ convert-object-to-json-string-in-javascript
Convert Object to JSON String in JavaScript | ProxiesAPI
We can also go the other way and parse a JSON string into a JavaScript object. This is useful when receiving JSON data from a web API. ... JSON.parse() method to convert JSON into a native JavaScript object.
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ConvertSimple
convertsimple.com โ€บ 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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FreeFormatter
freeformatter.com โ€บ json-escape.html
Free Online JSON Escape / Unescape Tool - FreeFormatter.com
Escapes or unescapes a JSON string removing traces of offending characters that could prevent parsing. The following characters are reserved in JSON and must be properly escaped to be used in strings:
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Python
docs.python.org โ€บ 3 โ€บ library โ€บ json.html
json โ€” JSON encoder and decoder
2 weeks ago - Parse every input line as separate JSON object. Added in version 3.8. ... Mutually exclusive options for whitespace control. Added in version 3.9. ... Show the help message. ... As noted in the errata for RFC 7159, JSON permits literal U+2028 (LINE SEPARATOR) and U+2029 (PARAGRAPH SEPARATOR) characters in strings, whereas JavaScript (as of ECMAScript Edition 5.1) does not.
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MDN Web Docs
developer.mozilla.org โ€บ en-US โ€บ docs โ€บ Learn_web_development โ€บ Core โ€บ Scripting โ€บ 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 โ€” superHeroes.
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Transform
transform.tools โ€บ json-to-typescript
JSON to TypeScript
An online playground to convert JSON to TypeScript
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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.
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GeeksforGeeks
geeksforgeeks.org โ€บ typescript โ€บ how-to-convert-an-object-to-a-json-string-in-typescript
How to Convert an Object to a JSON String in Typescript ? - GeeksforGeeks
July 23, 2025 - Example: The below code will explain the use of the JSON.stringify() method to convert an object to JSON string. JavaScript ยท
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BigBinary Academy
courses.bigbinaryacademy.com โ€บ learn-javascript โ€บ javascript-object-notation โ€บ json-stringify
Convert Object to JSON String - Learn JavaScript | BigBinary Academy
The `JSON.stringify()` method accepts three arguments - - The value to be converted into a JSON string. - Either an array or a function that can be used to filter the properties of the first argument and include only those properties in the JSON string. - Either the number of spaces or the ...