Javascript 图像滚动脚本未按预期工作
这就是我在HTML页面中调用JavaScript函数的方式:-Javascript 图像滚动脚本未按预期工作,javascript,html,dreamweaver,Javascript,Html,Dreamweaver,这就是我在HTML页面中调用JavaScript函数的方式:- <script type="text/javascript" src="imagerollover.js"></script> </script> <script type="text/javascript"> //Following function should be called at the end of the p
<script type="text/javascript" src="imagerollover.js"></script>
</script>
<script type="text/javascript">
//Following function should be called at the end of the page:
imagerollover();
</script>
</head>
<body>
.
.
.
//应在页面末尾调用以下函数:
图像翻转();
.
.
.
这是我的imagerollover.js:-
function imagerollover(){
var allimages=document.getElementsByTagName("img")
var preloadimages=[]
for (var i=0; i<allimages.length; i++){
if (allimages[i].getAttribute("data-over")){ //if image carries "data-over" attribute
preloadimages.push(new Image()) //preload "over" image
preloadimages[preloadimages.length-1].src=allimages[i].getAttribute("data-over")
allimages[i].onmouseover=function(){
this.src=this.getAttribute("data-over")
}
allimages[i].onmouseout=function(){
this.src=this.getAttribute("data-out")
}
} //end if
} //end for loop
}
//Usage: Call following function at the end of the page:
//imagerollover()
函数imagerollover(){
var allimages=document.getElementsByTagName(“img”)
var preload图像=[]
对于(var i=0;i您需要运行此onload-当您执行函数时,您的图像标记还不可用于脚本-您实际上没有遵循脚本的指令,该指令本应放在页面末尾或我在onload中的建议中
<head>
<script type="text/javascript" src="imagerollover.js"></script>
</script>
<script type="text/javascript">
window.onload=function()
//Following function should be called at the end of the page OR on window.onload!
imagerollover();
}
</script>
</head>
window.onload=function()
//应在页面末尾或window.onload上调用以下函数!
图像翻转();
}
您的
标记是什么样子的?是的,当加载文档中的所有图像时,将触发window.load事件。
<head>
<script type="text/javascript" src="imagerollover.js"></script>
</script>
<script type="text/javascript">
window.onload=function()
//Following function should be called at the end of the page OR on window.onload!
imagerollover();
}
</script>
</head>