JavaScript可以实现让背景是PNG格式的图片也透明吗(IE6.0) 因为我要设置DIV的背景为png透明格式的图片(通过css),IE7.0以上和FF本身就支持png,在IE6.0下面有没有办法设计背景和其它image标签里面的png的透明呢(主要还是背景)!希望知道解决办法的朋友能讲一下,谢谢了! 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 可以,用JavaScript处理:function correctPNG(){ for(var i=0; i<document.images.length; i++) { var img = document.images[i] var imgName = img.src.toUpperCase() if (imgName.substring(imgName.length-3, imgName.length) == "PNG") { var imgID = (img.id) ? "id='" + img.id + "' " : "" var imgClass = (img.className) ? "class='" + img.className + "' " : "" var imgTitle = (img.title) ? "title='" + img.title + "' " : "title='" + img.alt + "' " var imgStyle = "display:inline-block;" + img.style.cssText if (img.align == "left") imgStyle = "float:left;" + imgStyle if (img.align == "right") imgStyle = "float:right;" + imgStyle if (img.parentElement.href) imgStyle = "cursor:hand;" + imgStyle var strNewHTML = "<span " + imgID + imgClass + imgTitle + " style=\"" + "width:" + img.width + "px; margin:0px; height:" + img.height + "px;" + imgStyle + ";" + "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader" + "(src=\'" + img.src + "\', sizingMethod='scale');\"></span>" img.outerHTML = strNewHTML i = i-1 } } } window.attachEvent("onload", correctPNG); 这个只能解决HTML里面的image标签,对于背景的PNG,此代码没有效果,已经试过!主要还是想搞背景拉 function correctPNG() { for(var i=0; i<document.images.length; i++) { var img = document.images[i] var imgName = img.src.toUpperCase() if (imgName.substring(imgName.length-3, imgName.length) == "PNG") { var imgID = (img.id) ? "id='" + img.id + "' " : "" var imgClass = (img.className) ? "class='" + img.className + "' " : "" var imgTitle = (img.title) ? "title='" + img.title + "' " : "title='" + img.alt + "' " var imgStyle = "display:inline-block;" + img.style.cssText if (img.align == "left") imgStyle = "float:left;" + imgStyle if (img.align == "right") imgStyle = "float:right;" + imgStyle if (img.parentElement.href) imgStyle = "cursor:hand;" + imgStyle var strNewHTML = "<span " + imgID + imgClass + imgTitle + " style=\"" + "width:" + img.width + "px; height:" + img.height + "px;" + imgStyle + ";" + "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader" + "(src=\'" + img.src + "\', sizingMethod='scale');\"></span>" img.outerHTML = strNewHTML i = i-1 } } }function alphaBackgrounds(){ var rslt = navigator.appVersion.match(/MSIE (d+.d+)/, ''); var itsAllGood = (rslt != null && Number(rslt[1]) >= 5.5); for (i=0; i<document.all.length; i++){ var bg = document.all[i].currentStyle.backgroundImage; if (bg){ if (bg.match(/.png/i) != null){ var mypng = bg.substring(5,bg.length-2); //alert(mypng); document.all[i].style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='"+mypng+"', sizingMethod='crop')"; document.all[i].style.backgroundImage = "url('')"; //alert(document.all[i].style.filter); } } }}if (navigator.platform == "Win32" && navigator.appName == "Microsoft Internet Explorer" && window.attachEvent) {window.attachEvent("onload", correctPNG);window.attachEvent("onload", alphaBackgrounds);}这个试试 四楼朋友这个,确实可以让IE6同时支持PNG的透明效果,只不过背景的排列方式在IE6下面显示不正常,例如:我并没有在样式里面加入 background-repeat:no-repeat;但是背景图片只显示一张!我原先是写的 background-repeat:repeat-x;用了这个JS后,背景倒是透明了,可惜只能显示一张! 搜索:DD_belatedPNG.js吧这个用法很简单,<script>DD_belatedPNG.fix('img,div,ul,li');</script>就可以了。需要注意的时,所有不管是img标签的图片,还是背景图片,都需要直接写在html中,仅在css中定义的不产生效果 怎么取value值 谁帮忙 解释下一段程序. !!!!!!!!!!!!!!!!!!!!!!!!!! 提示框如何实现 如何实现JavaScript的跨域调用??? 为什么点击的时候没有反应呢? css样式表能导致js失效? 见内 调用外面的函数 急!求救各位高手。颜色代码问题 分析别人网站的JavaScript代码 怎样写右键菜单 请教两个有关引号的问题,确实调不通了 求教高人:鼠标不动的情况下怎么执行onmouseover里的函数
{
for(var i=0; i<document.images.length; i++)
{
var img = document.images[i]
var imgName = img.src.toUpperCase()
if (imgName.substring(imgName.length-3, imgName.length) == "PNG")
{
var imgID = (img.id) ? "id='" + img.id + "' " : ""
var imgClass = (img.className) ? "class='" + img.className + "' " : ""
var imgTitle = (img.title) ? "title='" + img.title + "' " : "title='" + img.alt + "' "
var imgStyle = "display:inline-block;" + img.style.cssText
if (img.align == "left") imgStyle = "float:left;" + imgStyle
if (img.align == "right") imgStyle = "float:right;" + imgStyle
if (img.parentElement.href) imgStyle = "cursor:hand;" + imgStyle
var strNewHTML = "<span " + imgID + imgClass + imgTitle
+ " style=\"" + "width:" + img.width + "px; margin:0px; height:" + img.height + "px;" + imgStyle + ";"
+ "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader"
+ "(src=\'" + img.src + "\', sizingMethod='scale');\"></span>"
img.outerHTML = strNewHTML
i = i-1
}
}
}
window.attachEvent("onload", correctPNG);
主要还是想搞背景拉
{
for(var i=0; i<document.images.length; i++)
{
var img = document.images[i]
var imgName = img.src.toUpperCase()
if (imgName.substring(imgName.length-3, imgName.length) == "PNG")
{
var imgID = (img.id) ? "id='" + img.id + "' " : ""
var imgClass = (img.className) ? "class='" + img.className + "' " : ""
var imgTitle = (img.title) ? "title='" + img.title + "' " : "title='" + img.alt + "' "
var imgStyle = "display:inline-block;" + img.style.cssText
if (img.align == "left") imgStyle = "float:left;" + imgStyle
if (img.align == "right") imgStyle = "float:right;" + imgStyle
if (img.parentElement.href) imgStyle = "cursor:hand;" + imgStyle
var strNewHTML = "<span " + imgID + imgClass + imgTitle
+ " style=\"" + "width:" + img.width + "px; height:" + img.height + "px;" + imgStyle + ";"
+ "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader"
+ "(src=\'" + img.src + "\', sizingMethod='scale');\"></span>"
img.outerHTML = strNewHTML
i = i-1
}
}
}
function alphaBackgrounds(){
var rslt = navigator.appVersion.match(/MSIE (d+.d+)/, '');
var itsAllGood = (rslt != null && Number(rslt[1]) >= 5.5);
for (i=0; i<document.all.length; i++){
var bg = document.all[i].currentStyle.backgroundImage;
if (bg){
if (bg.match(/.png/i) != null){
var mypng = bg.substring(5,bg.length-2);
//alert(mypng);
document.all[i].style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='"+mypng+"', sizingMethod='crop')";
document.all[i].style.backgroundImage = "url('')";
//alert(document.all[i].style.filter);
}
}
}
}if (navigator.platform == "Win32" && navigator.appName == "Microsoft Internet Explorer" && window.attachEvent) {
window.attachEvent("onload", correctPNG);
window.attachEvent("onload", alphaBackgrounds);
}
这个试试
只不过背景的排列方式在IE6下面显示不正常,
例如:我并没有在样式里面加入 background-repeat:no-repeat;
但是背景图片只显示一张!我原先是写的 background-repeat:repeat-x;
用了这个JS后,背景倒是透明了,可惜只能显示一张!
这个用法很简单,<script>DD_belatedPNG.fix('img,div,ul,li');</script>
就可以了。需要注意的时,所有不管是img标签的图片,还是背景图片,都需要直接写在html中,仅在css中定义的不产生效果