jQuery实现Div拖动+键盘控制综合效果的方法

时间：2022-01-05 10:06:43|栏目：jquery|点击：次

本文实例讲述了jQuery实现Div拖动+键盘控制综合效果的方法。分享给大家供大家参考。具体实现方法如下：

 
 <!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>
 
 <title>jQuery Div拖动+键盘控制综合效果</title>
 
 <meta http-equiv="content-type" content="text/html;charset=gb2312">
 
 <script src="/ajaxjs/jquery1.3.2.js"></script>
 
 </head>
 
 <body>
 
 预览时看不到效果，刷新一下即可
 
 <div id="text" style="width:120px;height:60px;background:#F06;position:absolute;left:500px;top:90px;cursor:move;"></div>
 
 <script type="text/javascript">
 
 var msgObj = document.getElementById('text');
 
 var posx = 0;
 
 var posy = 0;
 
 var moveable = false;
 
 var MouseDownEvent = document.onmousedown;
 
 var MouseMoveEvent = document.onmousemove;
 
 var MouseUpEvent = document.onmouseup;
 
 msgObj.onmousedown = function(evt) {
 
     var evt = evt||window.event;
 
     moveable = true; 
 
     posy = evt.clientY-parseInt(msgObj.style.top);
 
     posx = evt.clientX-parseInt(msgObj.style.left);
 
     document.onmousemove = function(evt) {
 
         if (moveable) {
 
             var evt = evt||window.event;
 
             msgObj.style.left = evt.clientX - posx + "px";
 
             msgObj.style.top = evt.clientY - posy + "px";
 
         }
 
         change();
 
     };
 
     document.onmouseup = function () { 
 
         if (moveable) { 
 
             document.onmousemove = MouseMoveEvent;
 
             document.onmouseup = MouseUpEvent;
 
             moveable = false; 
 
             posx = 0;
 
             posy = 0;
 
         } 
 
     };
 
 }
 
 var v=1;
 
 var a=0.9;
 
 var h=document.documentElement.clientHeight;
 
 function scroll(){
 
     var timer=setInterval(function(){
 
         v +=a;
 
         var top=(parseInt(msgObj.style.top)||0);
 
         if(top+v>h-70){
 
             if(v<2)clearInterval(timer);
 
             msgObj.style.top=h-70+"px";
 
             v=-v*0.5;   
 
         }else{
 
             msgObj.style.top=top+v+"px";
 
         }
 
         change();
 
     },10);
 
 };
 
 $(document).keyup(function(e){
 
     var e = e || window.event ;
 
     if(e.which == 13){
 
         scroll();   
 
     }
 
 })
 
 var x = 4 ;
 
 var y = 4 ;
 
 function newpro(){
 
     var Height = document.documentElement.clientHeight ;
 
     var Width = document.documentElement.clientWidth ;
 
     var newobj = document.createElement('div');
 
     newobj.setAttribute('id','bigbox');
 
     newobj.style.position = 'absolute';
 
     newobj.style.left = 20 +"px";
 
     newobj.style.top = 80 +"px";
 
     newobj.style.height = Height/x +"px" ;
 
     newobj.style.width = Width/y +"px" ;
 
     newobj.style.borderWidth = 1+"px";
 
     newobj.style.borderColor = "#ff6500";
 
     newobj.style.borderStyle = 'solid' ;
 
     newobj.innerHTML='<div id="minbox"></div>';
 
     document.body.appendChild(newobj);
 
     change();
 
 }
 
 function change(){
 
     var minobj = document.getElementById('minbox');
 
     minobj.style.position = 'absolute';
 
     minobj.style.left = parseInt(msgObj.style.left)/x +"px";
 
     minobj.style.top = parseInt(msgObj.style.top)/y +"px";
 
     minobj.style.height = 20 +"px" ;
 
     minobj.style.width = 30 +"px" ;
 
     minobj.style.background = "#F06";
 
 }
 
 window.onload = function(){
 
     newpro();
 
 }
 
 </script>
 
 </body>
 
 </html>

希望本文所述对大家的jQuery程序设计有所帮助。

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本文标题：jQuery实现Div拖动+键盘控制综合效果的方法

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