How to use TextDecoder In Javascript

TextDecoder is a JavaScript object that converts byte data, like those in byte arrays, into strings using specified character encodings, aiding tasks such as parsing or displaying text-based content.

Syntax:

let textDecoder = new TextDecoder();
let result = textDecoder.decode(arr1);

Example: In this example, the TextDecoder object is used to decode the byte array into a string,

Javascript
let arr1 = new Uint8Array([71, 101, 101, 107, 115]);
let textDecoder = new TextDecoder();
let result = textDecoder.decode(arr1);

console.log(result); 

Output
Geeks

JavaScript Program to Convert Byte Array to JSON

In this article, we are going to learn about the conversion of a Byte Array into JSON. Converting a byte array to JSON means transforming a sequence of bytes into a structured JSON format, often involving decoding bytes to a text string and then parsing it into JSON data.

Example:

Input : [71, 101, 101, 107, 115, 102, 111, 114, 71, 101, 101, 107, 115]
Output: w3wiki

There are different approaches to Convert Byte Array to JSON. Let’s discuss each of them one by one:

Table of Content

  • Using TextDecoder
  • Using String.fromCharCode() Method
  • Using for loop
  • Using Array.map and JSON.parse

We will explore all the above methods along with their basic implementation with the help of examples.

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Using TextDecoder

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Using String.fromCharCode() Method

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Using for loop

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Using Array.map and JSON.parse

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