IE6下CSS图片缓存问题解决方法

用一句代码即可搞定：复制代码代码如下: document.execCommand("BackgroundImageCache", false, true); 当然为了其它浏览器上能正常通过，需要做下判断后调用，才更安全：复制代码代码如下: if(Browser.isIE6){ try{ document.execCommand("BackgroundImageCache", false, true); } catch(e1){} } 平台检测代码可以这样写，摘自Ext源码：复制代码代码如下: var Browser = {}; try{ (function(){ var idSeed = 0, ua = navigator.userAgent.toLowerCase(), check = function(r){ return r.test(ua); }, DOC = document, isStrict = DOC.compatMode == "CSS1Compat", isOpera = check(/opera/), isChrome = check(/bchromeb/), isWebKit = check(/webkit/), isSafari = !isChrome && check(/safari/), isSafari2 = isSafari && check(/applewebkit/4/), // unique to Safari 2 isSafari3 = isSafari && check(/version/3/), isSafari4 = isSafari && check(/version/4/), isIE = !isOpera && check(/msie/), isIE7 = isIE && check(/msie 7/), isIE8 = isIE && check(/msie 8/), isIE6 = isIE && !isIE7 && !isIE8, isGecko = !isWebKit && check(/gecko/), isGecko2 = isGecko && check(/rv:1.8/), isGecko3 = isGecko && check(/rv:1.9/), isBorderBox = isIE && !isStrict, isWindows = check(/windows|win32/), isMac = check(/macintosh|mac os x/), isAir = check(/adobeair/), isLinux = check(/linux/), isIpad = check(/ipad/), isSecure = /^https/i.test(window.location.protocol); extend(Browser,{ isOpera:isOpera, isIE:isIE, isIE6:isIE6, isFirefox:isGecko, isSafari:isSafari, isChrome:isChrome, isIpad:isIpad }); })(); }catch(e){} //上面extend方法也很easy 复制代码代码如下: function extend(obj1,obj2){ for(var o in obj2){ obj1[o] = obj2[o]; } return obj1; }

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本文标题：IE6下CSS图片缓存问题解决方法

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