btoa
Description
The btoa of WindowOrWorkerGlobalScope for JS takes the input data, in the form of a Unicode string containing only characters in the range U+0000 to U+00FF, each representing a binary byte with values 0x00 to 0xFF respectively, and converts it to its base64 representation, which it returns.
Throws an "InvalidCharacterError" DOMException exception if the input string contains any out-of-range characters.
Syntax
result = self.btoa(data)
Parameters
data
An any type.