99 Bottles of Beer

Voting

Bookmarking

Language JavaScript

(using DOM and a closure)

Date:	03/07/06
Author:	Christof Donat
URL:	http://blog.cdonat.de
Comments:	0
Info:	n/a
Score:	(3.00 in 58 votes)

function song() {
        bottlesOfBeer = function(i) { return i+' bottles of beer'; }
        bottlesOfBeerOnTheWall = function(i) { return this.bottlesOfBeer(i)+' on the wall'; }
        takeOneDown = function() { return 'Take one down and pass it around, '; }

        createVerse= function(first,second) {
                var rval = document.createElement('p');
                rval.appendChild(document.createTextNode(first));
                rval.appendChild(document.createElement('br'));
                rval.appendChild(document.createTextNode(second));
                return rval;
        }
        getNormalVerseFunction = function(i) {
                return function() {
                        return createVerse(
                                bottlesOfBeerOnTheWall(i)+', '+bottlesOfBeer(i),
                                takeOneDown()+bottlesOfBeerOnTheWall(i-1)+'.'
                        );
                }
        }

        verse = new Array();

        for( var i = 3; i < 100; i++ )
                verse[i] = getNormalVerseFunction(i);
        verse[2] = function() {
                return createVerse(
                        bottlesOfBeerOnTheWall(2)+', '+bottlesOfBeer(2),
                        takeOneDown()+'1 bottle of beer.'
                );
        }
        verse[1] = function() {
                return createVerse(
                        '1 bottle of beer on the wall, 1 bottle of beer.',
                        takeOneDown()+bottlesOfBeerOnTheWall('no more')+'.'
                );
        }
        verse[0] = function() {
                return createVerse(
                        bottlesOfBeerOnTheWall('No more')+', '+bottlesOfBeer('no more'),
                        'Go to the store and buy some more, '+bottlesOfBeerOnTheWall(99)+'.'
                );
        }

        this.getDom = function() {
                var rval = document.createElement('div');
                for( var i = 99; i >= 0 ; i-- )
                        rval.appendChild(verse[i]());
                return rval;
        }
}

document.getElementsByTagName('body')[0].appendChild(new song().getDom());

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Alternative Versions

Version	Author	Date	Comments
Eponymous obfuscated version	JavaScribe	01/09/09	4
Fully commented, OOP approach.	Ariel Flesler	03/28/08	0
3	Brian Patrick Lee	04/20/05	3
With english numbers, DOM, and callbacks	Joseph Taylor	01/18/08	0

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