March 2014 update

Task/99-Bottles-of-Beer/JavaScript/99-bottles-of-beer-1.js

@@ -1,10 +1,13 @@
-// Line breaks are in HTML
 var beer = 99;
-while (beer > 0)
-{
- document.write( beer + " bottles of beer on the wall<br>" );
- document.write( beer + " bottles of beer<br>" );
- document.write( "Take one down, pass it around<br>" );
- document.write( (beer - 1) + " bottles of beer on the wall<br>" );
- beer--;
+while (beer > 0) {
+  var verse = [
+    beer + " bottles of beer on the wall,",
+    beer + " bottles of beer!",
+    "Take one down, pass it around",
+    (beer - 1) + " bottles of beer on the wall!"
+  ].join("\n");
+
+  console.log(verse);
+
+  beer--;
 }

Task/99-Bottles-of-Beer/JavaScript/99-bottles-of-beer-2.js

@@ -1,2 +1,10 @@
-// Line breaks are in HTML
-var beer; while ((beer = typeof beer === "undefined" ? 99 : beer) > 0) document.write( beer + " bottle" + (beer != 1 ? "s" : "") + " of beer on the wall<br>" + beer + " bottle" + (beer != 1 ? "s" : "") + " of beer<br>Take one down, pass it around<br>" + (--beer) + " bottle" + (beer != 1 ? "s" : "") + " of beer on the wall<br>" );
+let beer = 99;
+while (beer > 0) {
+  let verse = `${beer} bottles of beer on the wall,
+  ${beer} bottles of beer!
+  Take one down, pass it around
+  ${beer-1} bottles of beer on the wall`;
+
+  console.log(verse);
+  beer--;
+}

Task/99-Bottles-of-Beer/JavaScript/99-bottles-of-beer-3.js

@@ -1,21 +1,2 @@
 // Line breaks are in HTML
-function Bottles(count){
-    this.count = (!!count)?count:99;
-    this.knock = function(){
-        var c = document.createElement('div');
-        c.id="bottle-"+this.count;
-        c.innerHTML = "<p>"+this.count+" bottles of beer on the wall</p>"
-            +"<p>"+this.count+" bottles of beer!</p>"
-            +"<p>Take one down,<br>Pass it around</p>"
-            +"<p>"+(--this.count)+" bottles of beer on the wall</p><p><br></p>";
-        document.body.appendChild(c);
-    }
-    this.sing = function(){
-        while (this.count>0) { this.knock(); }
-    }
-}
-
-(function(){
-    var bar = new Bottles(99);
-    bar.sing();
-})();
+var beer; while ((beer = typeof beer === "undefined" ? 99 : beer) > 0) document.write( beer + " bottle" + (beer != 1 ? "s" : "") + " of beer on the wall<br>" + beer + " bottle" + (beer != 1 ? "s" : "") + " of beer<br>Take one down, pass it around<br>" + (--beer) + " bottle" + (beer != 1 ? "s" : "") + " of beer on the wall<br>" );

Task/99-Bottles-of-Beer/JavaScript/99-bottles-of-beer-4.js

@@ -1,18 +1,25 @@
-function bottleSong(n) {
-  if (!isFinite(Number(n)) || n == 0) n = 100;
-  var a  = '%% bottles of beer',
-      b  = ' on the wall',
-      c  = 'Take one down, pass it around',
-      r  = '<br>'
-      p  = document.createElement('p'),
-      s  = [],
-      re = /%%/g;
-
-  while(n) {
-    s.push((a+b+r+a+r+c+r).replace(re, n) + (a+b).replace(re, --n));
-  }
-  p.innerHTML = s.join(r+r);
-  document.body.appendChild(p);
+function Bottles(count) {
+  this.count = count || 99;
 }
 
-window.onload = bottleSong;
+Bottles.prototype.take = function() {
+  var verse = [
+    this.count + " bottles of beer on the wall,",
+    this.count + " bottles of beer!",
+    "Take one down, pass it around",
+    (this.count - 1) + " bottles of beer on the wall!"
+  ].join("\n");
+
+  console.log(verse);
+
+  this.count--;
+};
+
+Bottles.prototype.sing = function() {
+  while (this.count) {
+    this.take();
+  }
+};
+
+var bar = new Bottles(99);
+bar.sing();

Task/99-Bottles-of-Beer/JavaScript/99-bottles-of-beer-5.js

@@ -1,12 +1,18 @@
-(function(){var beer = 99,string='';
-while (beer > 0)
-{
- string+=beer+"bottles of beer on the wall\n"+ //inline line appending shouldn't be as expensive.
- beer +
- "bottles of beer\nTake one down, pass it around\n"+
- (--beer)+
- " bottles of beer on the wall\n" ;
+function bottleSong(n) {
+  if (!isFinite(Number(n)) || n == 0) n = 100;
+  var a  = '%% bottles of beer',
+      b  = ' on the wall',
+      c  = 'Take one down, pass it around',
+      r  = '<br>'
+      p  = document.createElement('p'),
+      s  = [],
+      re = /%%/g;
 
+  while(n) {
+    s.push((a+b+r+a+r+c+r).replace(re, n) + (a+b).replace(re, --n));
+  }
+  p.innerHTML = s.join(r+r);
+  document.body.appendChild(p);
 }
-console.log(string);
-})()
+
+window.onload = bottleSong;