Editing jquery.text.shadow.performance

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Preparation code

Preparation code HTML (this will be inserted in the <body> of a valid HTML5 document in standards mode) (useful when testing DOM operations or including libraries)

Include JavaScript libraries as follows: <script src="//cdn.ext/library.js"></script>

Define setup for all tests (variables, functions, arrays or other objects that will be used in the tests) (runs before each clocked test loop, outside of the timed code region) (e.g. define local test variables, reset global variables, clear canvas, etc.) (see FAQ)

/*
 * Plugin: jquery.text.shadow
 * Version: 1.4
 *
 * Description:
 * - Improved text-shadow plugin for jQuery.
 */
(function($){
	var methods=[function(rx){return {x:0,y:0};},function(rx){return {x:rx[0],y:rx[0]};},function(rx){return {x:rx[0],y:rx[1]};},function(rx){return {x:rx[0],y:rx[1],radius:rx[2]};}];
	$.extend($,{
		textShadowParseEx:function(value){
			var position=value.match(/-?(\d+)(?=[a-z%]+)/gi),
				color=value.match(/#[0-9a-f]+|(?:rgb|hsb)a?$[^$]*\)|\b[a-z]+\b/i),
				shadow={x:0,y:0,radius:0,color:color[0] || 'transparent'},
				posLength=position.length || 0,
				colorLength=color.length || 0;
			
			if (posLength>0 || colorLength>0)
			{
				$.extend(shadow,methods[Math.min(3,posLength)](position));
				if ((!shadow.x && !shadow.y && !shadow.radius) || shadow.color == 'transparent')
					$.extend(shadow,{x:0,y:0,radius:0,color:null});
			}
			
			return shadow;
		},
		textShadowParse:function(str){
			var values=str.split(','),index=values.length;
		
			if (index>0)
			{
				var stack=[];
			
				while(index--)
					stack.push(this.textShadowParseEx(values[index]))

return stack;
			}
			
			return [this.textShadowParseEx(str)];
		}
	});
	$.fn.stextShadowParse=function(value){
		return $.textShadowParse(value);
	}
})(jQuery);
$.browser.msie 
	? (function($){
		var textShadow=function(element){
			var shadowElement=document.createElement('span');
		
			return $.extend(this,{
				append:function(){
					var nodes=element.childNodes;
					for (var i=0,il=nodes.length;i<il;i++)
						if (! /jQueryTextShadow/i.test(nodes[i].className))
							shadowElement.appendChild(nodes[i].cloneNode(true));
						
					element.appendChild(shadowElement);
					
					if ((element.offsetHeight || element.clientHeight)<(shadowElement.offsetHeight || shadowElement.clientHeight))
							shadowElement.style.width=(parseInt(shadowElement.style.width)+1)+'px';
				},
				set:function(options){
					shadowElement.className='jQueryTextShadow index'+options.index;

try
					{
						$.extend(shadowElement.style,{
							padding:options.padding,
							width:options.width+'px',
							position:'absolute',
							zIndex:'-1',
							color:options.color,
							left:options.posX+'px',
							top:options.posY+'px'
						});
					} 
					catch(e) {return false;}

if (options.radius!=0)
						shadowElement.style.filter=options.opacity!=null 
							? 'progid:DXImageTransform.Microsoft.Blur(pixelradius='+parseInt(options.radius)+', enabled=\'true\', makeShadow=\'true\', ShadowOpacity='+options.opacity+')'
							: 'progid:DXImageTransform.Microsoft.Blur(pixelradius='+parseInt(options.radius)+', enabled=\'true\')';
							
					return true;
				},
				destroy:function(){
					if (shadowElement.parentNode) element.removeChild(shadowElement);
				}
			});
		};
		$.extend(textShadow,{
			prepareParent:$.browser.version<8 
				? function (element) {
					element.style.zoom=1;
					element.style.zIndex=0;
					if (element.currentStyle['position']!='absolute') element.style.position='relative';
				} 
				: function (element) {;
					element.style.zIndex=0;
					if (element.currentStyle['position']!='absolute') element.style.position='relative';
				},
			getIndex:function(el,shadow)
			{
				if (!('textShadowController' in el))
				{
					textShadow.prepareParent(el);
					el.textShadowController={stackSize:1,stack:[shadow],freeSize:0,free:[]};
					
					return 0;
				}
				
				var index=el.textShadowController.freeSize>0 ? el.textShadowController.free[--el.textShadowController.freeSize] : el.textShadowController.stackSize++;
				el.textShadowController.stack[index]=shadow;
				
				return index;
			},
			add:function(el,props){
				if (props.x==0 && props.y==0 && props.radius==0) return false;
			
				var style=el.currentStyle,
					shadow=new textShadow(el),
					index=textShadow.getIndex(el,shadow),
					config={
					padding:style["padding"],
					width:Math.max(0,(el.offsetWidth || el.clientWidth)-parseInt(style['padding-left'])-parseInt(style['padding-right'])),
					color:props.color!=null ? props.color : el.style.color,
					posX:(-parseInt(props.radius)+parseInt(props.x)),
					posY:(-parseInt(props.radius)+parseInt(props.y)),
					radius: props.radius || 0,
					index: index
				};
				
				shadow.set(config) ? shadow.append() : textShadow.remove(el,index);	
			},
			remove:function(el,textShadowIndex){
				if (textShadowIndex in el.textShadowController.stack)
				{
					el.textShadowController.stack[textShadowIndex].destroy();
					el.textShadowController.stack[textShadowIndex]=null;
					delete el.textShadowController.stack[textShadowIndex];
					el.textShadowController.free[el.textShadowController.freeSize++]=textShadowIndex;
					
					return true;
				}
				
				return false;
			},
			addMethods:{
				0:function(c){
					for (var index=0,indexLength=c.length;index<indexLength;index++)
					{
						var parse=$.textShadowParse(c[index].currentStyle['text-shadow']);
						for (var j=0,jl=parse.length;j<jl;j++)
							textShadow.add(c[index],parse[j]);
					}
				},
				1:function(c,options){
					for (var index=0,indexLength=c.length;index<indexLength;index++)
					{
						if ("length" in options)
							for (var j=0,jl=options.length;j<jl;j++)
								textShadow.add(c[index],$.extend({x:0,y:0,radius:0,color:null},options[j]));
						else
							textShadow.add(c[index],$.extend({x:0,y:0,radius:0,color:null},options));
					}
				},
				2:function(c,options){
					for (var index=0,indexLength=c.length;index<indexLength;index++)
					{
						var parse=$.textShadowParse(c[index].currentStyle['text-shadow']),
							j=Math.max(options.length || 0,parse.length);
					
						if (j>0)
						{
							while(j--)
								textShadow.add(c[index],(options[j] && parse[j]) 
															? $.extend(options[j],parse[j]) 
															: (options[j])
																? options[j]
																: parse[j]);
						}
						else
							textShadow.add(c[index],$.extend(options,parse[0]));
					}
				}
			}
		});
		$.extend($.fn,{
			stextShadow:function(options,auto){
				var argsLength=arguments.length;
			
				if (argsLength in textShadow.addMethods)
					textShadow.addMethods[argsLength](this,options);
			},
			stextShadowRemove:function(textShadowIndex){
				for (var index=0,indexLength=this.length;index<indexLength;index++)
				{
					var el=this[index];
					if ('textShadowController' in el)
					{
						if (arguments.length>0)
							textShadow.remove(el,textShadowIndex);
						else
							for (var index=0,indexLength=el.textShadowController.stack.length;index<indexLength;index++)
								textShadow.remove(el,index);
					}
				}
			}
		});
	})(jQuery)
	: (function($){
		$.extend($.fn,{
			stextShadow:function(){return true},
			stextShadowRemove:function(){return true}
		});
	})(jQuery);
//---------------------------------------------------------

$.browser.msie 
? (function($) {
	var posShadowMethods={
			0:function(rx){return {x:0,y:0};},
			1:function(rx){return {x:rx[0],y:rx[0]};},
			2:function(rx){return {x:rx[0],y:rx[1]};},
			3:function(rx){return {x:rx[0],y:rx[1],radius:rx[2]};}
		},
		setStyle=$.browser.version<7 
				? function (el) {
					el.style.zIndex=0;
					el.style.position="relative";
				} 
				: function (el) {
					el.style.zoom=1;
					el.style.zIndex=0;
					el.style.position="relative";
				}
		fTextShadowParse=function(value) 
		{
			if (!value) return {x:0,y:0,radius:0,color:null};

$.extend(span.style,{
				padding:el.currentStyle['padding'],
				width:(jel.width()+1)+'px',
				position:'absolute',
				zIndex:'-1',
				color:shadow.color!=null ? shadow.color : el.style.color,
				left:(-parseInt(shadow.radius)+parseInt(shadow.x))+'px',
				top:(-parseInt(shadow.radius)+parseInt(shadow.y))+'px'
			});	
			
			if (shadow.radius!=0)
				span.style.filter=shadow.opacity!=null 
									? "progid:DXImageTransform.Microsoft.Blur(pixelradius="+parseInt(shadow.radius)+", enabled='true', makeShadow='true', ShadowOpacity="+shadow.opacity+")"
									: "progid:DXImageTransform.Microsoft.Blur(pixelradius="+parseInt(shadow.radius)+", enabled='true')";
			
			jel.append(span);
		}
		
		return true;
	};
	$.fn.fTextShadowRemove = function() {
		if (!$.browser.msie) return;
		return this.children("span.jQueryTextShadow").remove();
	};
})(jQuery)
: (function($) {
	$.fn.fTextShadow = $.fn.fTextShadowRemove = function() {return true;};
})(jQuery);

/**** Textshadow START -->> *****/
(function($) {
	$.fn.textShadow = function(option) {
		if (!$.browser.msie) return;
		var IE6 = $.browser.version < 7;
		return this.each(function() {
			var el = $(this);
			var shadow = el.textShadowParse(this.currentStyle["text-shadow"]);
			shadow = $.extend(shadow, option);
			el.textShadowRemove();
			if (shadow.x == 0 && shadow.y == 0 && shadow.radius == 0) return;
			if (el.css("position")=="static") {
				el.css({position:"relative"});
			}
			el.css({zIndex:"0"});
			if (IE6) {
				el.css({zoom:"1"});
			}
			var span=document.createElement("span");
			$(span).addClass("jQueryTextShadow");
			$(span).html(el.html());
			$(span).css({
				padding:		this.currentStyle["padding"],	
				width:		el.width()+1,
				position:	"absolute",
				zIndex:		"-1",
				color:		shadow.color!=null?shadow.color:el.css("color"),
				left:			(-parseInt(shadow.radius)+parseInt(shadow.x))+"px",
				top:			(-parseInt(shadow.radius)+parseInt(shadow.y))+"px"
			});
			if (shadow.radius != 0) {
				if (shadow.opacity != null) {
					$(span).css("filter", "progid:DXImageTransform.Microsoft.Blur(pixelradius="+parseInt(shadow.radius)+", enabled='true', makeShadow='true', ShadowOpacity="+shadow.opacity+")");
				} else {
					$(span).css("filter", "progid:DXImageTransform.Microsoft.Blur(pixelradius="+parseInt(shadow.radius)+", enabled='true')");
				}
			}	
			el.append(span);
		
	  });
	};
	$.fn.textShadowParse = function(value) 
	{
		value = String(value)
			.replace(/^\s+|\s+$/gi, '')
			.replace(/\s*!\s*important/i, '')
			.replace(/$\s*([^,$]+)\s*,\s*([^,\)]+)\s*,\s*([^,\)]+)\s*,\s*([^\)]+)\s*\)/g, '($1/$2/$3/$4)')
			.replace(/$\s*([^,$]+)\s*,\s*([^,\)]+)\s*,\s*([^\)]+)\s*\)/g, '($1/$2/$3)')
		var shadow = {
			x      : 0,
			y      : 0,
			radius : 0,
			color  : null
		};
		if (value.length > 1 || value[0].toLowerCase() != 'none') {
			value = value.replace(/\//g, ',');
			var color;
			if ( value.match(/(\#[0-9a-f]{6}|\#[0-9a-f]{3}|(rgb|hsb)a?$[^$]*\)|\b[a-z]+\b)/i) && (color = RegExp.$1) ) {
				shadow.color = color.replace(/^\s+/, '');
				value = value.replace(shadow.color, '');
			}
			value = value
				.replace(/^\s+|\s+$/g, '')
				.split(/\s+/)
				.map(function(item) {
						return (item || '').replace(/^0[a-z]*$/, '') ? item : 0 ;
					});
			switch (value.length)
			{
				case 1:
					shadow.x = shadow.y = value[0];
					break;
				case 2:
					shadow.x = value[0];
					shadow.y = value[1];
					break;
				case 3:
					shadow.x = value[0];
					shadow.y = value[1];
					shadow.radius = value[2];
					break;
			}
			if ((!shadow.x && !shadow.y && !shadow.radius) || shadow.color == 'transparent') {
				shadow.x = shadow.y = shadow.radius = 0;
				shadow.color = null;
			}
		}
		return shadow;
	};
	$.fn.textShadowRemove = function() {
		if (!$.browser.msie) return;
		return this.each(function() {
			$(this).children("span.jQueryTextShadow").remove();
		});
	};
})(jQuery);

if(typeof Array.prototype.map == 'undefined') {
	Array.prototype.map = function(fnc) {
		var a = new Array(this.length);
		for (var i = 0; i < this.length; i++) {
			a[i] = fnc(this[i]);
		}
		return a;
	}
}
/**** Textshadow ENDE -->> *****/
testElement=$('.testing');

Define teardown for all tests (runs after each clocked test loop, outside of the timed code region) (see FAQ)

Code snippets to compare

Test 1

Title

Async (check if this is an asynchronous test)

Code

testElement.stextShadow();
testElement.stextShadowRemove();

Test 2

Title

Async (check if this is an asynchronous test)

Code

testElement.textShadow();

Test 3

Title

Async (check if this is an asynchronous test)

Code

testElement.fTextShadow();