It is supported in modern browsers and can be used to encode strings as follows:įunction base64Encode ( input ) const base64Encoded = "Y29kZWRhbW4gaXMgYXdlc29tZSE=" const decodedString = base64Decode ( base64Encoded ) console. The btoa() function is a built-in JavaScript function that takes a binary string as an argument and returns its Base64-encoded equivalent. Encoding Base64 in JavaScript Using the btoa() Function ![]() This encoding scheme is widely used in various applications such as embedding images in HTML, XML, or JSON data, and transmitting binary data over text-based protocols like HTTP and SMTP. ![]() An additional character, "=", is used as a padding character when the binary data being encoded is not divisible by 3. These characters include uppercase letters (A-Z), lowercase letters (a-z), digits (0-9), and two special characters (+ and /). What is Base64 Encoding?īase64 encoding is a technique to convert binary data into ASCII text format, which consists of a set of 64 different characters (hence the name "Base64"). We will also briefly discuss how to perform these operations in Node.js using the Buffer class. In this blog post, we will explore how to encode and decode Base64 using JavaScript with various examples. This can be useful when you need to store binary data in a more readable format, such as when transmitting data over a network or when saving data in a database. ![]() Base64 encoding and decoding is an important aspect of web development, as it allows you to convert binary data into ASCII text format and vice versa.
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