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JSON

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When exchanging data between client and server, the data can only be text.

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JSON, which stands for JavaScript Object Notation is a data format suitable for transporting data to and from a server. JSON is text, written with JavaScript object notation.

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A JSON object should be enclosed in curly braces. JSON names require double quotes, while standard JavaScript objects don't.

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JSON.stringify()

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Converts a JavaScript object to a JSON string.

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const person = {\n  name: "hemanta",\n  age: 32,\n}\n\nconst personText = JSON.stringify(person)\n\nconsole.log(personText) // => {"name": "hemanta", "age": 32}\n\nconsole.log(typeof personText) // => string
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JSON.parse()

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Parses a JavaScript string and constructs the JavaScript object described by the string.

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const person = '{"name": "hemanta", "age": 32}'\n\nconst personText = JSON.parse(person)\n\nconsole.log(personText) // => { name: 'hemanta', age: 32}\n\nconsole.log(typeof personText) // => object
\n","frontmatter":{"title":"What is JSON?","date":"2021-05-21"}}},"pageContext":{"slug":"/what-is-json/","prev":{"fields":{"slug":"/understanding-node-modules-in-node/"},"frontmatter":{"modules":null}},"next":{"fields":{"slug":"/javascript-array-searching-and-sorting-methods/"},"frontmatter":{"modules":null}}}}, "staticQueryHashes": ["3159585216"]}