Writing binary data to Buffer

Normally, I would expect that the following would be good enough to represent binary data in a Buffer:

new Buffer('01001000','binary')

but I am pretty certain Node.js/JS does not support this 'binary' encoding. What is the best way then to write binary data to a buffer?

Copyright Notice：Content Author:「Alexander Mills」，Reproduced under the CC 4.0 BY-SA copyright license with a link to the original source and this disclaimer.
Link to original article：https://stackoverflow.com/questions/41729267/writing-binary-data-to-buffer

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