What do “>>” and “<<” mean in Javascript?

Question

I have a piece of Javascript code I\'m trying to understand

// read big-endian (network byte order) 32-bit float
readFloat32 = function(data, offset) {
    v         


        

Answer 1

shift a by b bits to the left (padding with zeros)

a << b

shift a by b bits to the right (copying the sign bit)

a >> b