How to use the toByteArray function from base-64

base-64.toByteArray is a function that converts a base64-encoded string into a byte array.

How does base-64.toByteArray work?

base-64.toByteArray is a function that converts a base64-encoded string into a byte array. When you call base-64.toByteArray(), you pass in a base64-encoded string as a parameter. The function then converts the string into a byte array, where each element in the array represents a single byte of data from the original string. The byte array is created by decoding the base64-encoded string using the standard Base64 decoding algorithm, which converts groups of four characters from the encoded string into three bytes of data in the byte array. The algorithm also pads the encoded string with one or two = characters if necessary to ensure that the number of characters in the encoded string is a multiple of four. Once the byte array has been created, it can be used in various ways, such as decoding binary data from a base64-encoded string, or passing binary data to functions that expect byte arrays. Overall, base-64.toByteArray provides a simple way to convert a base64-encoded string into a byte array, allowing for easy manipulation and processing of binary data in JavaScript.

Ai Example

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const base64 = require("base-64");

// Encode a string in base64
const encoded = base64.encode("Hello, World!");

// Decode the base64-encoded string into a byte array
const byteArr = base64.toByteArray(encoded);

// Log the resulting byte array to the console
console.log(byteArr);
// Output: [ 72, 101, 108, 108, 111, 44, 32, 87, 111, 114, 108, 100, 33 ]

In this example, we use the base-64 library to encode a string in base64 using base64.encode(). We then pass the resulting encoded string to base-64.toByteArray() to decode it into a byte array. The resulting byte array represents the binary data from the original string, with each element in the array representing a single byte of data. In this case, the byte array represents the ASCII values of the characters in the original string 'Hello, World!', which are [ 72, 101, 108, 108, 111, 44, 32, 87, 111, 114, 108, 100, 33 ]. By using base-64.toByteArray() to decode a base64-encoded string, we can easily manipulate and process binary data in JavaScript.