EachTest-prototypejs.js

/**
 * this.printout(data); cannot be called. The .each on the array removes the current scope
 */
var EachTest = Class.create({
  test: function() {
    var arr = Array();
    arr.push("a");
    arr.push("b");
    arr.push("c");
    arr.push("d");
    arr.push("e");

    arr.each(function(data) {
      this.printout(data);
    });

    // works
    /*arr.each(function(data) {
      this.printout(data);
    }.bind(this));*/

    // works
    /*arr.each(function(data) {
      this.printout(data);
    }, this);*/
  },
  
  printout: function(data) {
    console.log(data);
  }
});

var eachTest = new EachTest();
eachTest.test();