testing in js

timer classes and more.js

console.log("\n");
var i = 10;
function writeD(d){
  document.write(d);
}
function fixDecimal(num) {
   return Math.round(num * 10) / 10;
}
function Timer (milisecs, callback) {
    var t;
    this.runs = false;
    this.start = function() {
      this.runs = true;
      t = setInterval(function () {callback();}, milisecs);
    };
    this.stop = function () {
      clearTimeout(t);
      this.runs = false;
    };
}
var apple = new Timer(100, function () {
  if (i > 0){
    i -= 0.1;
    i = fixDecimal(i);
  }
  else{
    apple.stop();
  }
  writeD(i + " ");
});
apple.start();
//setTimeout(function () {apple.stop();}, 5100);
setInterval(function () {console.log(apple.runs);}, 1000);