图片与JavaScript配合做出个性滚动条- Javascript

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Javascript 中的图片与JavaScript配合做出个性滚动条

出处:互联网 整理: 软晨网（RuanChen.com） 发布: 2010-01-10 浏览: 126 ::

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简单的加密css地址防止别人下载你的CSS文件的方法 JavaScript 复制功能代码兼容多浏览器

如果你想定制出一个漂亮的滚动条的话,这个JS特效可能会适合你,不过代码稍嫌麻烦些,但效果真的不错,代码含有中文注释,学习也是不错的,希望朋友们喜欢.

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>图片与JavaScript配合做出个性滚动条</title>
<style type="text/css">
* { margin:0; padding:0; }
body { margin:20px 0 400px 20px; font:12px Arial; }
h1 { font-size:14px; }
ol { margin:20px; line-height:160%; }
#out {
position:relative;
width:500px;
height:300px;
margin:100px 0 100px 80px;
border:1px solid #369;
overflow:hidden;
}
#content {
width:520px;
height:100%;
overflow:auto;
-moz-user-select:none;
}
#scrollBar,#scrollBarHandle,.scroll_bar_top,.scroll_bar_top_a,.scroll_bar_bottom,.scroll_bar_bottom_a {
background-image:url(http://files.ruanchen.com/"out">
<div id="content">
fsdfs fsdfs 11111111 fsdfs 11111111 fsdfs 11111111 fsdfs 11111111 fsdfs 11111111 fsdfs 11111111 fsdfs 11111111 fsdfs 11111111 fsdfs 11111111 fsdfs 11111111 fsdfs 11111111 fsdfs 11111111 fsdfs 11111111 fsdfs fsdfs 11111111 fsdfs 11111111 fsdfs 11111111 fsdfs 11111111 fsdfs 11111111 fsdfs 11111111 fsdfs 11111111 fsdfs 11111111 fsdfs 11111111 fsdfs 11111111 fsdfs 11111111 fsdfs 11111111 fsdfs 11111111 fsdfs fsdfs 11111111 fsdfs 11111111 fsdfs 11111111 fsdfs 11111111 fsdfs 11111111 fsdfs 11111111 fsdfs 11111111 fsdfs 11111111 fsdfs 11111111 fsdfs 11111111 fsdfs 11111111 fsdfs 11111111 fsdfs 
</div>
<div id="scrollBar">
<div id="scrollBarTop" class="scroll_bar_top"></div>
<div id="scrollBarHandle"></div>
<div id="scrollBarBottom" class="scroll_bar_bottom"></div>
</div>
</div>
<script>
var ximen = {
$:function(o){ return document.getElementById(o); },
getStyle:function(o) { return o.currentStyle||document.defaultView.getComputedStyle(o,null); },
getOffset:function(o) {
var t = o.offsetTop,h = o.offsetHeight;
while(o = o.offsetParent) { t += o.offsetTop; }
return { top:t, height:h };
},
bind:function(o,eType,fn) {
if(o.addEventListener) { o.addEventListener(eType,fn,false); }
else if(o.attachEvent) { o.attachEvent("on" + eType,fn); }
else { o["on" + eType] = fn; }
},
unbind:function(o,eType,fn) {
if(o.removeEventListener) { o.removeEventListener(eType,fn,false); }
else if(o.detachEvent) { o.detachEvent("on" + eType,fn); }
else { o["on" + eType] = fn; }
},
stopPropagate:function(e) {
if(e && e.stopPropagation) { e.stopPropagation(); }
else { window.event.cancelBubble = true; }
return false;
},
stopDefault:function(e) {
e = e || window.event;
e.stopPropagation && (e.preventDefault(),e.stopPropagation()) || (e.cancelBubble = true,e.returnValue = false);
}
};
(function(){
var myScrollDown,myScrollUp,scrollBarMouseDown,scrollBarMouseUp,relY,
out = ximen.$("out"),
content = ximen.$("content"),
scrollBar = ximen.$("scrollBar"),
scrollBarTop = ximen.$("scrollBarTop"),
scrollBarHandle = ximen.$("scrollBarHandle"),
scrollBarBottom = ximen.$("scrollBarBottom"),
scrollBarUpHeight = parseInt(ximen.getStyle(scrollBarTop).height),
scrollBarBottomHeight = parseInt(ximen.getStyle(scrollBarBottom).height),
contentScrollHeight = content.scrollHeight,//将content.scrollHeight赋一次值,解决IE6下scrollHeight需调用两次的bug
scrollBarHandleHeight = parseInt(content.offsetHeight/content.scrollHeight * (scrollBar.offsetHeight - scrollBarUpHeight - scrollBarBottomHeight)),
setScrollBarHandle = function() {//当内容超多时设置拖拽条子的最小高度
scrollBarHandle.style.top = scrollBarUpHeight + "px";
if(scrollBarHandleHeight > 15) { scrollBarHandle.style.height = scrollBarHandleHeight + "px"; }
else { scrollBarHandleHeight = 15; scrollBarHandle.style.height = "15px"; }
},
clearAllInterval = function() { clearInterval(myScrollDown); clearInterval(myScrollUp); clearInterval(scrollBarMouseDown); },
forMousemove = function(e) {
var e = e || window.event;
content.scrollTop = (e.clientY - relY - scrollBarUpHeight)/(scrollBar.offsetHeight - scrollBarHandleHeight - scrollBarUpHeight - scrollBarBottomHeight)*(content.scrollHeight - content.offsetHeight);
},
forMouseDown = function(event){
var et = event.target || event.srcElement;
relY = event.clientY - et.offsetTop;
ximen.bind(document,"mousemove",forMousemove);
},
scrollDir = function(e) {
var e = e || window.event,eDir; //设置滚轮事件,e.wheelDelta与e.detail分别兼容IE、W3C，根据返回值的正负来判断滚动方向
if(e.wheelDelta) { eDir = e.wheelDelta/120; }
else if(e.detail) { eDir = -e.detail/3; }
if(eDir > 0) { content.scrollTop -= 80; } //步长设80像素a比较接近window滚动条的滚动速度
else { content.scrollTop += 80; }
ximen.stopDefault(e);
},
scrollBarClick = function(e) {
var e = e || window.event,
mStep = scrollBar.offsetHeight,
documentScrollTop = document.documentElement.scrollTop,
hOffset = ximen.getOffset(scrollBarHandle);
if(documentScrollTop + e.clientY < hOffset.top) { scrollBarMouseDown = setInterval(function(){ content.scrollTop -= 15; },10); }
else if(documentScrollTop + e.clientY > hOffset.top + hOffset.height) { scrollBarMouseDown = setInterval(function(){ content.scrollTop += 15; },10); }
};
setScrollBarHandle();
ximen.bind(content,"scroll",function(){
scrollBarHandle.style.top = content.scrollTop/(content.scrollHeight - content.offsetHeight) * (scrollBar.offsetHeight - scrollBarHandleHeight - scrollBarUpHeight - scrollBarBottomHeight) + scrollBarUpHeight + "px";
});
ximen.bind(scrollBarBottom,"mousedown",function(){ myScrollDown = setInterval(function(){ content.scrollTop += 15; },10); });
ximen.bind(scrollBarTop,"mousedown",function(){ myScrollUp = setInterval(function(){ content.scrollTop -= 15; },10); });
ximen.bind(scrollBarBottom,"mouseup",clearAllInterval);
ximen.bind(scrollBarBottom,"mouseout",clearAllInterval);
ximen.bind(scrollBarTop,"mouseup",clearAllInterval);
ximen.bind(scrollBarTop,"mouseout",clearAllInterval);
ximen.bind(scrollBarHandle,"mousedown",forMouseDown);
ximen.bind(document,"mouseup",function(){
ximen.unbind(document,"mousemove",forMousemove);
ximen.unbind(scrollBarHandle,"mousemove",forMousemove);
});
ximen.bind(out,"selectstart",function(){ return false; });
ximen.bind(out,"select",function(){ document.selection.empty(); });
ximen.bind(out,"mousewheel",scrollDir);
ximen.bind(out,"DOMMouseScroll",scrollDir);
ximen.bind(scrollBar,"mousedown",scrollBarClick);
ximen.bind(scrollBar,"mouseup",clearAllInterval);
ximen.bind(scrollBarTop,"click",function(event){ ximen.stopPropagate(event); });
ximen.bind(scrollBarTop,"mousedown",function(){ scrollBarTop.className = "scroll_bar_top_a"; });
ximen.bind(scrollBarTop,"mouseup",function(){ scrollBarTop.className = "scroll_bar_top"; });
ximen.bind(scrollBarTop,"mouseout",function(){ scrollBarTop.className = "scroll_bar_top"; });
ximen.bind(scrollBarBottom,"click",function(event){ ximen.stopPropagate(event); });
ximen.bind(scrollBarBottom,"mousedown",function(){ scrollBarBottom.className = "scroll_bar_bottom_a"; });
ximen.bind(scrollBarBottom,"mouseup",function(){ scrollBarBottom.className = "scroll_bar_bottom"; });
ximen.bind(scrollBarBottom,"mouseout",function(){ scrollBarBottom.className = "scroll_bar_bottom"; });
})();
</script>
</body>
</html>

[Ctrl+A 全选提示:你可先修改部分代码,再按运行]

简单的加密css地址防止别人下载你的CSS文件的方法 JavaScript 复制功能代码兼容多浏览器

Javascript 中的 图片与JavaScript配合做出个性滚动条

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Javascript 中的图片与JavaScript配合做出个性滚动条