CSS 渐变背景的6个演示代码_页面背景

<meta http-equiv="content-type" content="text/html; charset=gbk"> <title>CSS娓愬彉鑳屾櫙</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> <div id="example1" class="example">鑴氭湰涔嬪</div>