HTML页⾯滚动时，部分内容位置固定不滚动HTML 页⾯滚动时，部分内容位置固定不滚动
效果截图：
页⾯源代码：
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>⽆标题页</title>
</head>
<body >
<div>
<div >
<div>
我会滚动<br/>
滚动内容区域<br/>
滚动内容区域<br/>
滚动内容区域<br/>
</div>
html滚动效果代码<div id="div1" >
我不滚动<br/>
你看我<br/><br/>我不滚动<br/>
你看我<br/><br/>我不滚动<br/>
你看我<br/><br/>我不滚动<br/>
你看我<br/><br/>
</div>
</div>
<div >
<span>ssssssssssssssss</span><br>
<span>ssssssssssssssss</span><br>
<span>ssssssssssssssss</span><br>
<span>ssssssssssssssss</span><br>
<span>ssssssssssssssss</span><br>
<span>ssss我是内容ssss</span><br>
<span>ssssssssssssssss</span><br>
<span>sssssss我是内容sssssssss</span><br>
<span>ssssssssssssssss</span><br>
<span>sssssss我是内容sssssssss</span><br>
<span>ssssssssssssssss</span><br>
<span>ssssss我是内容ssssssssss</span><br>
<span>ssssssssssssssss</span><br>
<span>ssssssssssssssss</span><br><span>ssssss我是内容ssssssssss</span><br> <span>ssssssssssssssss</span><br>
<span>ssssssssssssssss</span><br><span>ssssss我是内容ssssssssss</span><br> <span>ssssssssssssssss</span><br>
<span>ssssssssssssssss</span><br><span>ssssss我是内容ssssssssss</span><br> <span>ssssssssssssssss</span><br>
<span>ssssssssssssssss</span><br><span>ssssss我是内容ssssssssss</span><br> <span>ssssssssssssssss</span><br>
<span>ssssssssssssssss</span><br><span>ssssss我是内容ssssssssss</span><br> <span>ssssssssssssssss</span><br>
<span>ssssssssssssssss</span><br><span>ssssss我是内容ssssssssss</span><br> <span>ssssssssssssssss</span><br>
<span>ssssssssssssssss</span><br><span>ssssss我是内容ssssssssss</span><br> <span>ssssssssssssssss</span><br>
<span>ssssssssssssssss</span><br><span>ssssss我是内容ssssssssss</span><br> <span>ssssssssssssssss</span><br>
<span>ssssssssssssssss</span><br><span>ssssss我是内容ssssssssss</span><br> <span>ssssssssssssssss</span><br>
<span>ssssssssssssssss</span><br><span>ssssss我是内容ssssssssss</span><br> <span>ssssssssssssssss</span><br>
<span>ssssssssssssssss</span><br><span>ssssss我是内容ssssssssss</span><br> <span>ssssssssssssssss</span><br>
<span>ssssssssssssssss</span><br><span>ssssss我是内容ssssssssss</span><br> <span>ssssssssssssssss</span><br>
<span>ssssssssssssssss</span><br><span>ssssss我是内容ssssssssss</span><br> <span>ssssssssssssssss</span><br>
<span>ssssssssssssssss</span><br><span>ssssss我是内容ssssssssss</span><br> <span>ssssssssssssssss</span><br>
<span>ssssssssssssssss</span><br><span>ssssss我是内容ssssssssss</span><br> <span>ssssssssssssssss</span><br>
<span>ssssssssssssssss</span><br><span>ssssss我是内容ssssssssss</span><br> <span>ssssssssssssssss</span><br>
<span>ssssssssssssssss</span><br>
</div>
</div>
<script type="text/javascript">
function htmlScroll(){
var top = document.body.scrollTop || document.documentElement.scrollTop;
if(elFix.data_top < top){
elFix.style.position ='fixed';
p =0;
elFix.style.left = elFix.data_left;
}
else{
elFix.style.position ='static';
}
}
function htmlPosition(obj){
var o = obj;
var t = o.offsetTop;
var l = o.offsetLeft;
while(o = o.offsetParent){
t += o.offsetTop;
l += o.offsetLeft;
}
obj.data_top = t;
obj.data_left = l;
}
var oldHtmlWidth = document.documentElement.offsetWidth;
var oldHtmlWidth = document.documentElement.offsetWidth;
var newHtmlWidth = document.documentElement.offsetWidth;
if(oldHtmlWidth == newHtmlWidth){
return;
}
oldHtmlWidth = newHtmlWidth;
elFix.style.position ='static';
htmlPosition(elFix);
htmlScroll();
}
var elFix = ElementById('div1');
htmlPosition(elFix);
</script>
</body>
</html>

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