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JS implements good compatibility and dynamic web page right-click menu effect with buffering_javascript skills

WBOY
WBOYOriginal
2016-05-16 15:38:421145browse

The example in this article describes the JS implementation of a dynamic web page right-click menu effect with good compatibility and buffering. Share it with everyone for your reference. The details are as follows:

This is a compatible and buffered dynamic web page right-click menu. It should be said that it is very well done. It is completely implemented in JavaScript. I think it is quite good. Thank you to the author.

The screenshot of the running effect is as follows:

The online demo address is as follows:

http://demo.jb51.net/js/2015/js-dg-right-button-menu-style-codes/

The specific code is as follows: 

<!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=gb2312" />
<title>右键菜单</title>
<style type="text/css">
div,body,span,ul,li {padding:0;margin:0;font-size:12px;}
ul,ol {list-style-type:none;}
#div1 {width:196px;height:296px;padding:2px;overflow:hidden;position:absolute;border:1px solid #666;left:200px;top:50px;display:none;z-index=1;-webkit-box-shadow:1px 3px 4px #888;box-shadow:1px 3px 4px #888;-moz-box-shadow:1px 3px 4px #888;}
#ul li {width:176px;height:25px;line-height:25px;cursor:pointer;overflow:hidden;padding-left:20px;}
.tip {width:500px;height:25px;font-size:20px;margin:50px 200px;color:red;}
</style>
<script type="text/javascript">
var g_oDiv={};
var oDiv=null;
var g_iSpeed=0;
var t=null;
window.onload=function(){
 opUl();
 oDiv=document.getElementById("div1");
 oDiv.style.height="0px";
 document.oncontextmenu=function(ev){
   var oEvent=window.event||ev;
   cancelDefault(oEvent);
   g_oDiv.MouseX=oEvent.clientX;
   g_oDiv.MouseY=oEvent.clientY;
   oDiv.style.left=g_oDiv.MouseX+"px";
   oDiv.style.top=g_oDiv.MouseY+"px";
   /* 初始化经过背景为空 */
   var oUl=document.getElementById("ul");
   var aLi=oUl.getElementsByTagName("li");
   for(var i=0;i<aLi.length;i++){
    aLi[i].style.background="none";
   }
   clearInterval(t);
   doDiv();
 }
 document.body.onmousedown=function(ev){
  var oEvent=window.event||ev;
  clearInterval(t);
  g_iSpeed=0;
  g_oDiv.h=0;
  oDiv.style.height=g_oDiv.h+"px";
  oDiv.style.display="none";
 }
 oDiv.onmousedown=function(ev){
  var oEvent=window.event||ev;
  oEvent.cancelBubble=true;
 }
}
function doDiv(ev){
 var oEvent=window.event||ev;
 oDiv.style.display="block";
 t=setInterval(doMove,30);
}
function doMove(){
 if(oDiv.offsetHeight>=302){
  g_iSpeed*=-0.7;
  oDiv.style.height=302+"px";
 }
 g_oDiv.h=g_iSpeed+oDiv.offsetHeight;
 g_iSpeed+=10; 
 oDiv.style.height=g_oDiv.h+"px";
}
function cancelDefault(oEvent){
 if(oEvent.preventDefault){
  oEvent.preventDefault();
 }
 else{
  oEvent.returnValue=false;
 }
}
/* 对li操作后的动作的定义 */
function opUl(){
 var oUl=document.getElementById("ul");
 var aLi=oUl.getElementsByTagName("li");
 for(var i=0;i<aLi.length;i++){
  aLi[i].aIndex=i;
  aLi[i].onmouseover=function(){
   for(j=0;j<aLi.length;j++){
    aLi[j].style.background="none";
   }
   aLi[this.aIndex].style.background="#ffbb66";
  }
  aLi[i].onclick=function(){
   clearInterval(t);
   oDiv.style.display="none";
   alert(this.innerHTML+" 你可以在这里自定义自己的方法啦");
  }
 }
}
</script>
</head>
<body style="width:2000px;height:800px;">
<div class="tip">右键点击游览器呗</div>
 <div id="div1">
  <ul id="ul">
   <li>这是第一行</li>
   <li>这是第二行</li>
   <li>这是第三行</li>
   <li>这是第四行</li>
   <li>这是第五行</li>
   <li>这是第六行</li>
   <li>这是第一行</li>
   <li>这是第二行</li>
   <li>这是第三行</li>
   <li>这是第四行</li>
   <li>这是第五行</li>
   <li>这是第六行</li>
  </ul>
 </div>
</body>
</html>

I hope this article will be helpful to everyone’s JavaScript programming.

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