How does Math.random() work in javascript?

Question

I recently figured out how to get a random number via google, and it got me thinking how does Math.random() work. So here I am I can not figure out how they did

Answer 1

you may want this article for a reference: https://hackernoon.com/how-does-javascripts-math-random-generate-random-numbers-ef0de6a20131

And btw, recently I am also curious about this question and then read the source code of NodeJS. We can know one possible implementation from Google V8:

The main entry for the random (MathRandom::RefillCache function): https://github.com/v8/v8/blob/master/src/math-random.cc

How the seed initialized? see also here: https://github.com/v8/v8/blob/master/src/base/utils/random-number-generator.cc#L31

The key function is (XorShift128 function): https://github.com/v8/v8/blob/master/src/base/utils/random-number-generator.h#L119

in this header file, there are references to some papers:

// See Marsaglia: http://www.jstatsoft.org/v08/i14/paper
// And Vigna: http://vigna.di.unimi.it/ftp/papers/xorshiftplus.pdf