快速拖动层引发的断离现象?该如何处理
日期：2014-05-16 浏览次数：20420 次
快速拖动层引发的断离现象?
一个层,鼠标按住后可以在页面上拖动,但是如果拖动速度过快,鼠标就会移出层区域,拖动终止?
怎么预防这样的现象?
1.鼠标可以移出层,但是有某个缓冲容器能记录鼠标路径,随后层会继续移动到鼠标位
2.用某个方式让鼠标无法快速移出层的区域
3.层拖动的定位方式重写
哪个是比较合适的解决方法?
ps : 4.无解
==============================================================
<%@ page language= "java " import= "java.util.* " pageEncoding= "UTF-8 "%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+ ":// "+request.getServerName()+ ": "+request.getServerPort()+path+ "/ ";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN ">
<html>
<base href= " <%=basePath%> ">
<head>
<title> My JSP 'test.jsp ' starting page </title>
<script type= "text/javascript ">
var mX;
var mY;
var flag=0;
function get_x(){
mX=event.x;
mY=event.y;
}
function mousedown()
{
mX=event.x;
mY=event.y;
flag=1;
}
function mouseup()
{
flag=0;
}
function mousemove()
{
if(flag==0)return false;
var e=document.getElementById( 'aa ');
mXmov=event.clientX;
mYmov=event.clientY;
var w=e.offsetWidth;
e.style.width=parseInt(w)+parseInt(mXmov-mX);
}
</script>
<style type= "text/css ">
div{float:left;}
.aaCss{border:1px solid red;width:200px;height:100px;}
</style>
</head>
<body onmousemove= "get_x() ">
<div id= "body " onmouseup= "mouseup() ">
<div id= "aa " class= "aaCss "> AAAA </div>
<div onmousedown= "mousedown() " onmousemove= "mousemove() " id= "bb " style= "width:30px;border:1px solid gary; "> dragMe </div>
</div>
</body>
</html>
------解决方案--------------------
点击后在body之类的元素注册移动事件
------解决方案--------------------
<html>
<head>
<meta http-equiv= "Content-Type " content= "text/html; charset=gb2312 " />
<title> </title>
<script language= "javascript ">
var ie = navigator.appName == "Microsoft Internet Explorer ";
var count = 24;
var r = 80; //圆半径
var speed = 8; //速度
var arc = 0;
var newLeft = oldLeft = 0;
var newTop = oldTop = 0;
var divs = [];
function init()
{
for(var i=1;i <=count;i++)
{
var div = document.createElement( "DIV ");
with(div.style)
{
width = 2;
height = 2;
backgroundColor = "#FF0000 ";
position = "absolute ";
zIndex = i + 10;
}
div.id = "div " + i;
div.innerHTML = "
一个层,鼠标按住后可以在页面上拖动,但是如果拖动速度过快,鼠标就会移出层区域,拖动终止?
怎么预防这样的现象?
1.鼠标可以移出层,但是有某个缓冲容器能记录鼠标路径,随后层会继续移动到鼠标位
2.用某个方式让鼠标无法快速移出层的区域
3.层拖动的定位方式重写
哪个是比较合适的解决方法?
ps : 4.无解
==============================================================
<%@ page language= "java " import= "java.util.* " pageEncoding= "UTF-8 "%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+ ":// "+request.getServerName()+ ": "+request.getServerPort()+path+ "/ ";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN ">
<html>
<base href= " <%=basePath%> ">
<head>
<title> My JSP 'test.jsp ' starting page </title>
<script type= "text/javascript ">
var mX;
var mY;
var flag=0;
function get_x(){
mX=event.x;
mY=event.y;
}
function mousedown()
{
mX=event.x;
mY=event.y;
flag=1;
}
function mouseup()
{
flag=0;
}
function mousemove()
{
if(flag==0)return false;
var e=document.getElementById( 'aa ');
mXmov=event.clientX;
mYmov=event.clientY;
var w=e.offsetWidth;
e.style.width=parseInt(w)+parseInt(mXmov-mX);
}
</script>
<style type= "text/css ">
div{float:left;}
.aaCss{border:1px solid red;width:200px;height:100px;}
</style>
</head>
<body onmousemove= "get_x() ">
<div id= "body " onmouseup= "mouseup() ">
<div id= "aa " class= "aaCss "> AAAA </div>
<div onmousedown= "mousedown() " onmousemove= "mousemove() " id= "bb " style= "width:30px;border:1px solid gary; "> dragMe </div>
</div>
</body>
</html>
------解决方案--------------------
点击后在body之类的元素注册移动事件
------解决方案--------------------
<html>
<head>
<meta http-equiv= "Content-Type " content= "text/html; charset=gb2312 " />
<title> </title>
<script language= "javascript ">
var ie = navigator.appName == "Microsoft Internet Explorer ";
var count = 24;
var r = 80; //圆半径
var speed = 8; //速度
var arc = 0;
var newLeft = oldLeft = 0;
var newTop = oldTop = 0;
var divs = [];
function init()
{
for(var i=1;i <=count;i++)
{
var div = document.createElement( "DIV ");
with(div.style)
{
width = 2;
height = 2;
backgroundColor = "#FF0000 ";
position = "absolute ";
zIndex = i + 10;
}
div.id = "div " + i;
div.innerHTML = "
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