1/22/2024 0 Comments Javascript base64 decode node jsHere is an example of how to use atob() to decode Base64 data:Ĭonst base64String = 'SGVsbG8gV29ybGQh' // Base64-encoded stringĬonstdecodedString = code(base64String) // Decoded stringĬonsole.log(decodedString) // Output: "Hello World!" The atob() function takes a Base64-encoded string as input and returns the decoded binary data as a string. In JavaScript, you can easily decode Base64 data using built-in functions, such as atob(). How to decode Base64 data in JavaScript using built-in functions For example, it is used in email attachments, HTML images, and JSON Web Tokens (JWTs). If the last chunk of data is less than 6 bits, it is padded with zeros to make it a full 6 bits.īase64 is commonly used for data transmitting over the internet and storing data in files. Data is divided into 6-bit chunks and encoded in Base64, and each chunk is represented by a character from the Base64 character set. The Base64 encoding uses 6 bits per character to represent the original binary data. The final data block is padded with zeros if it is less than 6 bits, making it a full 6 bits. The 26 uppercase and lowercase letters of the English alphabet, the 10 numerals, and two extra characters that differ depending on the implementation are among these characters. It is accomplished by converting the binary data into a representation known as radix-64, which employs a set of 64 characters to represent the binary data.
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