CSS渐变背景的6个演示代码_页面背景特效

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CSS渐变背景的六个示例，个人觉得这是非常实用的一个常用技巧，不使用任何图片实现Div背景渐变，而且兼容IE和FF2，以后想要类似的效果，可有的参考了。

<!doctype html public '-//w3c//dtd html 4.01//en' 'http://www.w3.org/tr/html4/strict.dtd'>
<html>
<head>
<meta http-equiv=mrc-type mrc="text/html; charset=gbk">
<title>CSS渐变背景</title>
<script>
var setGradient = (function(){
	var p_dCanvas = document.createElement('canvas');
	var p_useCanvas =  !!( typeof(p_dCanvas.getContext) == 'function');
	var p_dCtx = p_useCanvas?p_dCanvas.getContext('2d'):null;
	var p_isIE = /*@cc_on!@*/false;
   try{   p_dCtx.canvas.toDataURL() }catch(err){
          p_useCanvas = false ;
   };
         
	if(p_useCanvas){
	   return function (dEl , sColor1 , sColor2 , bRepeatY ){
			if(typeof(dEl) == 'string') dEl =  document.getElementById(dEl);
			if(!dEl) return false;
			var nW = dEl.offsetWidth;
			var nH = dEl.offsetHeight;
			p_dCanvas.width = nW;
			p_dCanvas.height = nH;
			var dGradient;
			var sRepeat;
			if(bRepeatY){
				dGradient = p_dCtx.createLinearGradient(0,0,nW,0);
				sRepeat = 'repeat-y';
			}else{
				dGradient = p_dCtx.createLinearGradient(0,0,0,nH);
				sRepeat = 'repeat-x';
			}		
			
			dGradient.addColorStop(0,sColor1);
			dGradient.addColorStop(1,sColor2);				
			
			p_dCtx.fillStyle = dGradient ; 
			p_dCtx.fillRect(0,0,nW,nH);
			var sDataUrl = p_dCtx.canvas.toDataURL('image/png');
			
			with(dEl.style){
				backgroundRepeat = sRepeat;
				backgroundImage = 'url(' + sDataUrl + ')';
				backgroundColor = sColor2;    
			};
	   }
	}else if(p_isIE){
		
		p_dCanvas = p_useCanvas = p_dCtx =  null;		
		return function (dEl , sColor1 , sColor2 , bRepeatY){
			if(typeof(dEl) == 'string') dEl =  document.getElementById(dEl);
			if(!dEl) return false;
			dEl.style.zoom = 1;
			var sF = dEl.currentStyle.filter;
			dEl.style.filter += ' ' + ['progid:DXImageTransform.Microsoft.gradient(	GradientType=',  +(!!bRepeatY ),',enabled=true,startColorstr=',sColor1,', endColorstr=',sColor2,')'].join('');
	};
	
	}else{
		p_dCanvas = p_useCanvas = p_dCtx =  null;
		return function(dEl , sColor1 , sColor2  ){
			
			if(typeof(dEl) == 'string') dEl =  document.getElementById(dEl);
			if(!dEl) return false;
			with(dEl.style){
			 backgroundColor = sColor2; 
			};
		}
	}
})();
 </script>
<style>
  body{font:0.75em/1.4 Arial;text-align:left;margin:20px;}
  hr{clear:both;visibility:hidden;}
  xmp{font:12px/12px "Courier New";background:#fff;color:#666; border:solid 1px #ccc;}
  div.example{  border:solid 1px #555;margin:0 20px 20px 0;float:left; display:inline;margin:1em;background:#fff;width:300px;padding:40px;color:#222;font:xx-small/1.2 "Tahoma";text-align:justify;}
</style>
<body>
<div id="example1" class="example">模板无忧（mb5u.com）提供JavaScript/CSS特效代码。</div>
  <div id="example2" class="example">模板无忧各类编程源码、 </div>
  <div id="example3" class="example">提供各类编程源码</div>
  <div id="example4" class="example">模板无忧（mb5u.com） </div>
  <div id="example5" class="example">mb5u.com </div>
  <div id="example6" class="example">模板无忧 </div>
<script>
setGradient('example1','#4ddbbe','#d449cc',1);
setGradient('example2','#46ddbd','#d8b617',0);
setGradient('example3','#c81fc1','#bf445f',1);
setGradient('example4','#2285e5','#d769eb',0);
setGradient('example5','#8b4286','#eac87d',1);
setGradient('example6','black','white',0);
</script>
</body>
</html>

所属频道：页面背景特效/更新时间：2012-12-04

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CSS渐变背景的6个演示代码_页面背景特效

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