pageGlossary.js

/*------------------------------------------------------------------------------
Object:         pageGlossary (formerly makeGlossary)
Author:         Aaron Gustafson (aaron at easy-designs dot net)
Creation Date:  27 November 2005
Version:        1.0
Homepage:       http://www.easy-designs.net/code/pageGlossary/
License:        Creative Commons Attribution-ShareAlike 2.0 License
                http://creativecommons.org/licenses/by-sa/2.0/
Note:           If you change or improve on this script, please let us know by 
                emailing the author (above) with a link to your demo page.
------------------------------------------------------------------------------*/
var pageGlossary = { getFrom: false, buildIn: false, rawArr: [], glossArr: [], usedArr: [], init: function( fromId, toId ){ if( !document.getElementById || !document.getElementsByTagName || !document.getElementById( fromId ) || !document.getElementById( toId ) ) return; pageGlossary.getFrom = document.getElementById( fromId ); pageGlossary.buildIn = document.getElementById( toId ); pageGlossary.collect(); if( pageGlossary.usedArr.length < 1 ) return; pageGlossary.glossArr = pageGlossary.ksort( pageGlossary.glossArr ); pageGlossary.build();}, collect: function(){ var dfns = pageGlossary.getFrom.getElementsByTagName('dfn'); var abbrs = pageGlossary.getFrom.getElementsByTagName('abbr'); var acros = pageGlossary.getFrom.getElementsByTagName('acronym'); pageGlossary.rawArr = pageGlossary.rawArr.concat( dfns, abbrs, acros ); if( ( pageGlossary.rawArr[0].length == 0 )&&( pageGlossary.rawArr[1].length == 0 )&&( pageGlossary.rawArr[2].length == 0 ) ) return; var rawLength = pageGlossary.rawArr.length; for( var i=0; i < rawLength; i++ ){ var nestedLength = pageGlossary.rawArr[i].length; if( nestedLength < 1 ) continue; for( var j=0; j < nestedLength; j++ ){ if( !pageGlossary.rawArr[i][j].hasChildNodes() ) continue; var trm = pageGlossary.rawArr[i][j].firstChild.nodeValue; var dfn = pageGlossary.rawArr[i][j].getAttribute( 'title' ); if( !pageGlossary.inArray( trm, pageGlossary.usedArr ) ){ pageGlossary.usedArr.push( trm ); pageGlossary.glossArr[trm] = dfn;}}}}, build: function(){ var h2 = document.createElement('h2'); h2.appendChild( document.createTextNode( 'Page Glossary' ) ); var dl = document.createElement('dl'); dl.className = 'glossary'; for( key in pageGlossary.glossArr ){ var dt = document.createElement( 'dt' ); dt.appendChild( document.createTextNode( key ) ); dl.appendChild( dt ); var dd = document.createElement('dd'); dd.appendChild( document.createTextNode( pageGlossary.glossArr[key] ) ); dl.appendChild( dd );}pageGlossary.buildIn.appendChild( h2 ); pageGlossary.buildIn.appendChild( dl );}, addEvent: function( obj, type, fn ){ if (obj.addEventListener) obj.addEventListener( type, fn, false ); else if (obj.attachEvent) { obj['e'+type+fn] = fn; obj[type+fn] = function() { obj['e'+type+fn]( window.event );}; obj.attachEvent( 'on'+type, obj[type+fn] );}}, ksort: function( arr ){ var rArr = [], tArr = [], n=0, i=0, el; for( el in arr ) tArr[n++] = el + '|' + arr[el]; tArr = tArr.sort(); var arrLength = tArr.length; for( var i=0; i < arrLength; i++ ){ var x = tArr[i].split( '|' ); rArr[x[0]] = x[1];}return rArr;}, inArray: function( needle, haystack ){ var arrLength = haystack.length; for( var i=0; i < arrLength; i++ ){ if( haystack[i] === needle ) return true;}return false;}}; pageGlossary.addEvent(window,'load',function(){pageGlossary.init('content','extras');});