y-a-v-a

(function() {
  const s = document.createElement('style');
  s.textContent = `.supportsHas:has(p):after {content: "hasHas";}`;
  document.head.appendChild(s);
  const supportsHas = document.createElement('div');
  supportsHas.classList.add('supportsHas');
  const p = document.createElement('p');
  supportsHas.appendChild(p);
  document.body.appendChild(supportsHas);

ericelliott

Essential JavaScript Links

I no longer mantain this list. There are lots of other very comprehensive JavaScript link lists out there. Please see those, instead (Google "awesome JavaScript" for a start).

banksean

/*
  I've wrapped Makoto Matsumoto and Takuji Nishimura's code in a namespace
  so it's better encapsulated. Now you can have multiple random number generators
  and they won't stomp all over eachother's state.
  
  If you want to use this as a substitute for Math.random(), use the random()
  method like so:
  
  var m = new MersenneTwister();