Decoding and Encoding of Strings Using The Base64:
Btoa() and atob() are two base 64 helper function. It works as a core part of HTML specification and it is available for all modern browsers. The naming is this become of uni commands for binary to ASCII and ASCII to binary.
Inputs and outputs of functions are Unicode strings. btoa take a string and encode it in base 64. It can be well comprehended using an example.
If you take a string like hello world and encode it into base64 and in your web developer console defining the string it shows ‘SGVsbG8gV29ybGQh’ and if you use ASCII function of atob and take a string of ‘SGVsbG8gV29ybGQh’ nad decode it into base 64 in the browser development console define the string and displaying the decoded string you can get the output of Hello world.
This output shows that this string can be converted into an original message. Now you have tools for encoding and decoding of base64. For base64 decode Online you can use online platforms.
Using The Buffer Object
You can use atob and btoa methods but you cannot use them in node.js project.node.js itself provides a global object called a buffer which can encode and decode strings format to base 6 formats.
A buffer is a global object and there is no need to install or import any package to access these objects. You can directly call the buffer function and pass data from it.
The buffer not only supports base 64 format but also other formats like utf, ASCII, hex, and many more. To encode the string to base 4 use the buffer to string base64 function to encode the string and to decode the string use the function to decode like a buffer from that decode the base64 string.
Uses of Base64:
It is also attainable to convert input from other data or JSON to string with less character which is URL safe. You can contain certain servers using the interest plus or forward slash characters. It is recommended to use encodeURIcommand.
There are limitations in base64: base 64 is not a secure encryption method but is used in encryption and it is not a compression method but it has its own usage in the process of compression. It takes more size in compression of objects.