A simple, single-use Javascript eventListener class. (http://jsbin.com/ADeZAHe/2/edit)

SingleEvent.js

/**
 * This class allows you to assign an eventListener to be utilzed only once, before
 * it removes itself.
 * 
 * # Usage Example:
 *     var elem = document.createElement('div');
 *     var onetimer = new SingleEvent(elem, "click", function(){alert("Well, I'll never do THAT again...");});
 *     document.body.appendChild(elem);
 */
 
var SingleEvent = function (elem, eventName, callback) { "use strict";
  var singleuse;
  if (typeof elem === "object" && elem.tagName) {
    singleuse = function() {
        callback.apply();
        elem.removeEventListener(eventName, singleuse, false);
    };
    elem.addEventListener(eventName, singleuse, false);
  }
};

SingleEvent.min.js

var SingleEvent=function(e,t,n){"use strict"
var a
"object"==typeof e&&e.tagName&&(a=function(){n.apply(),e.removeEventListener(t,a,!1)},e.addEventListener(t,a,!1))}