Question

How to convert JSON to ArrayBuffer in JavaScript

Answer 1

const jsonData = { name: "R2D2", age: 86, city: "New York" };

// Convert JSON to string
const jsonString = JSON.stringify(jsonData);

// Encode string to ArrayBuffer
const encoder = new TextEncoder();
const arrayBuffer = encoder.encode(jsonString).buffer;

console.log(arrayBuffer);



/*
run:

ArrayBuffer {
  [Uint8Contents]: <7b 22 6e 61 6d 65 22 3a 22 52 32 44 32 22 2c 22 61 67 65 22 3a 38 36 2c 22 63 69 74 79 22 3a 22 4e 65 77 20 59 6f 72 6b 22 7d>,
  byteLength: 42
}

*/

 

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Answer 2

// Step 1: JSON object
const jsonData = { name: "R2D2", age: 86, city: "New York" };

// Step 2: Convert to JSON string
const jsonString = JSON.stringify(jsonData);

// Step 3: Encode string into UTF-8 bytes
const encoder = new TextEncoder();
const uint8Array = encoder.encode(jsonString);

// Step 4: Get the underlying ArrayBuffer
const arrayBuffer = uint8Array.buffer;

console.log(arrayBuffer);



/*
run:

ArrayBuffer {
  [Uint8Contents]: <7b 22 6e 61 6d 65 22 3a 22 52 32 44 32 22 2c 22 61 67 65 22 3a 38 36 2c 22 63 69 74 79 22 3a 22 4e 65 77 20 59 6f 72 6b 22 7d>,
  byteLength: 42
}

*/

 

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