How to get the string length in bytes in nodejs?

Question

How to get the string length in bytes in nodejs? If I have a string, like this: äáöü then str.length will return with 4. But how to get that, how many bytes form the string?

Thanks in advance

Answer 1

Here is an example:

str = 'äáöü';  console.log(str + ": " + str.length + " characters, " +   Buffer.byteLength(str, 'utf8') + " bytes");  // äáöü: 4 characters, 8 bytes 

Buffer.byteLength(string, [encoding])