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Node.js throws “btoa is not defined” error
...rface, it only provides command line utilities.
If you need to convert to Base64 you could do so using Buffer:
console.log(Buffer.from('Hello World!').toString('base64'));
Reverse (assuming the content you're decoding is a utf8 string):
console.log(Buffer.from(b64Encoded, 'base64').toString());...
Base64 Decoding in iOS 7+
...ing = "foo"
Encoding
let plainData = plainString.data(using: .utf8)
let base64String = plainData?.base64EncodedString()
print(base64String!) // Zm9v
Decoding
if let decodedData = Data(base64Encoded: base64String!),
let decodedString = String(data: decodedData, encoding: .utf8) {
print(dec...
Binary Data in JSON String. Something better than Base64
...ed as UTF-8). With that in mind, I think the best you can do space-wise is base85 which represents four bytes as five characters. However, this is only a 7% improvement over base64, it's more expensive to compute, and implementations are less common than for base64 so it's probably not a win.
You c...
How to make an HTTP request + basic auth in Swift
...ssword)
let loginData = loginString.data(using: String.Encoding.utf8)!
let base64LoginString = loginData.base64EncodedString()
// create the request
let url = URL(string: "http://www.example.com/")!
var request = URLRequest(url: url)
request.httpMethod = "POST"
request.setValue("Basic \(base64Login...
Strange \n in base64 encoded string in Ruby
The inbuilt Base64 library in Ruby is adding some '\n's. I'm unable to find out the reason. For this special example:
6 Ans...
Why does base64 encoding require padding if the input length is not divisible by 3?
What is the purpose of padding in base64 encoding. The following is the extract from wikipedia:
3 Answers
...
How to display Base64 images in HTML?
I'm having trouble displaying a Base64 image inline.
11 Answers
11
...
Simple way to encode a string according to a password?
...igenère cipher
It's quick and easy to implement. Something like:
import base64
def encode(key, string):
encoded_chars = []
for i in xrange(len(string)):
key_c = key[i % len(key)]
encoded_c = chr(ord(string[i]) + ord(key_c) % 256)
encoded_chars.append(encoded_c)
...
Failed to execute 'btoa' on 'Window': The string to be encoded contains characters outside of the La
...r in the title is thrown only in Google Chrome, according to my tests. I'm base64 encoding a big XML file so that it can be downloaded:
...
Android. WebView and loadData
...n 2.3 and 4.0.3.
In fact, I have no idea about what other values besides "base64" does the last parameter take. Some Google examples put null in there.
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