Created
July 26, 2013 12:07
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getElementsByClassName shims. Various shims solving this problem
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/* | |
All the getElementsByClassName functions below are in: | |
http://snook.ca/archives/javascript/your_favourite_1 | |
*/ | |
if( typeof document.getElementsByClassName !== "function"){ | |
document.getElementsByClassName= function( className, nodeName ){ | |
var a = []; | |
var re = new RegExp('(^| )'+className+'( |$)'); | |
var els = nodeName.getElementsByTagName("*"); | |
for(var i=0,j=els.length; i<j; i++) | |
if(re.test(els[i].className))a.push(els[i]); | |
return a; | |
}; | |
} | |
//////////////////////////////////////////////////////////////////// | |
// The two functions below seem to be the most complete(cross browser) solution. | |
// document.all is equavallent to getElementsByTagName of IE 5 | |
if( document.all && !document.getElementsByTagName ){ | |
document.getElementsByTagName = function( nodeName ) | |
{ | |
if( nodeName == '*' ) return document.all; | |
var result = [], rightName = new RegExp( nodeName, 'i' ), i; | |
for( i=0; i<document.all.length; i++ ) | |
if( rightName.test( document.all[i].nodeName ) ) | |
result.push( document.all[i] ); | |
return result; | |
}; | |
} // end if | |
// This if statement is my addition, the original code does not have it, it overrides the default function anyway | |
if( typeof document.getElementsByClassName !== "function"){ | |
document.getElementsByClassName = function( className, nodeName ) | |
{ | |
var result = [], tag = nodeName||'*', node, seek, i; | |
if( document.evaluate ){ | |
seek = '//'+ tag +'[@class="'+ className +'"]'; | |
seek = document.evaluate( seek, document, null, 0, null ); | |
while( (node = seek.iterateNext()) ) | |
result.push( node ); | |
}else{ | |
var rightClass = new RegExp( '(^| )'+ className +'( |$)' ); | |
seek = document.getElementsByTagName( tag ); | |
for( i=0; i<seek.length; i++ ) | |
if( rightClass.test( (node = seek[i]).className ) ) | |
result.push( seek[i] ); | |
} | |
return result; | |
}; | |
} // end if | |
///////////////////////////////////////////////////////////////////// | |
// This look good as well it uses document.querySelectorAll function which is IE8 specific | |
// and then for older versions of IE but not IE 5.x. Maybe by using the getElementsByTagName function | |
// above I sould be able to solve this problem. | |
if (!document.getElementsByClassName) { | |
document.getElementsByClassName = function(search) { | |
var d = document, elements, pattern, i, results = []; | |
if (d.querySelectorAll) { // IE8 | |
return d.querySelectorAll("." + search); | |
} | |
if (d.evaluate) { // IE6, IE7 | |
pattern = ".//*[contains(concat(' ', @class, ' '), ' " + search + " ')]"; | |
elements = d.evaluate(pattern, d, null, 0, null); | |
while ((i = elements.iterateNext())) { | |
results.push(i); | |
} | |
} else { | |
elements = d.getElementsByTagName("*"); | |
pattern = new RegExp("(^|\\s)" + search + "(\\s|$)"); | |
for (i = 0; i < elements.length; i++) { | |
if ( pattern.test(elements[i].className) ) { | |
results.push(elements[i]); | |
} | |
} | |
} | |
return results; | |
}; | |
} | |
///////////////////////////////////////////////////////////////////// | |
/* Also check this code at google: | |
https://code.google.com/p/getelementsbyclassname/source/browse/trunk/getElementsByClassName.js | |
However it looks complicated and cumbersome. | |
*/ |
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