Micro Debounce

Debounce.js

function Debounce(timeout) { 
  this._timeout = timeout;
  this._registry = {};
}

Debounce.prototype.run = function(callback) {
  var registry = this._registry;
  if (registry[callback]) {
    clearTimeout(registry[callback]);
  }
  
  registry[callback] = setTimeout(function() { 
    callback();
    delete registry[callback];
  }, this._timeout);
};