Rate Limiting JavaScript Function Call

ratelimit.js

// Returns a new function that will call the given "func" at most once every "wait" milliseconds.
// Based on debounce function from: https://davidwalsh.name/essential-javascript-functions
function rateLimit(func, wait) {
  var waiting = false;
  return function() {
    if (!waiting) {
      var waiting = true, context = this, args = arguments;
      func.apply(context, args);
      setTimeout(function(){ waiting = false; });
    }
  };
};