JS實現(xiàn)的自定義右鍵菜單實例二則

更新時間：2015年09月01日 17:24:30 作者：企鵝

這篇文章主要介紹了JS實現(xiàn)的自定義右鍵菜單,以兩則實例形式分析了javascript自定義右鍵菜單效果的實現(xiàn)技巧,具有一定參考借鑒價值,需要的朋友可以參考下

本文實例講述了JS實現(xiàn)的自定義右鍵菜單。分享給大家供大家參考。具體如下：

示例1：

運行效果截圖：

具體代碼如下：

<!DOCTYPE html>
<html>
 <head>
 <title>JS實現(xiàn)自定義右鍵菜單</title>
 <meta http-equiv="content-type" content="text/html; charset=utf-8">
 <script src="ajax.js"></script>
 <style type="text/css">
 #container {
  text-align : center;
  width : 500px;
  height : 500px;
  border : 1px solid blue;
  margin : 0 auto;
 }
 .skin {
  width : 100px;
  border : 1px solid gray;
  padding : 2px;
  visibility : hidden;
  position : absolute;
 }
 div.menuitems {
  margin : 1px 0;
 }
 div.menuitems a {
  text-decoration : none;
 }
 div.menuitems:hover {
  background-color : #c0c0c0;
 }
 </style>
<script> 
window.onload = function() {
 var container = document.getElementById('container'); 
 var menu = document.getElementById('menu');
 /*顯示菜單*/
 function showMenu() {
 var evt = window.event || arguments[0];
 /*獲取當前鼠標右鍵按下后的位置，據(jù)此定義菜單顯示的位置*/
 var rightedge = container.clientWidth-evt.clientX;
 var bottomedge = container.clientHeight-evt.clientY;
 /*如果從鼠標位置到容器右邊的空間小于菜單的寬度，就定位菜單的左坐標（Left）為當前鼠標位置向左一個菜單寬度*/
 if (rightedge < menu.offsetWidth)  
  menu.style.left = container.scrollLeft + evt.clientX - menu.offsetWidth + "px";  
 else
 /*否則，就定位菜單的左坐標為當前鼠標位置*/
  menu.style.left = container.scrollLeft + evt.clientX + "px";
 /*如果從鼠標位置到容器下邊的空間小于菜單的高度，就定位菜單的上坐標（Top）為當前鼠標位置向上一個菜單高度*/
 if (bottomedge < menu.offsetHeight)
  menu.style.top = container.scrollTop + evt.clientY - menu.offsetHeight + "px";
 else
 /*否則，就定位菜單的上坐標為當前鼠標位置*/
  menu.style.top = container.scrollTop + evt.clientY + "px";
 /*設置菜單可見*/
 menu.style.visibility = "visible";  
 LTEvent.addListener(menu,"contextmenu",LTEvent.cancelBubble);
 }
 /*隱藏菜單*/
 function hideMenu() {
 menu.style.visibility = 'hidden';
 }    
 LTEvent.addListener(container,"contextmenu",LTEvent.cancelBubble);
 LTEvent.addListener(container,"contextmenu",showMenu);
 LTEvent.addListener(document,"click",hideMenu);   
}
</script>
 </head>
 <body>
 <div id="menu" class="skin">
 <div class="menuitems">
  <a href="javascript:history.back();">后退</a>
 </div>
 <div class="menuitems">
  <a href="javascript:history.back();">前進</a>
 </div>
 <hr>
 <div class="menuitems">
  <a href="" target="_blank">地圖api</a>
 </div>
 <div class="menuitems">
  <a href="" target="_blank">實時交通</a>
 </div>
 <div class="menuitems">
  <a href="" target="_blank">地圖搜索</a>
 </div>
 <div class="menuitems">
  <a href="" target="_blank">駕駛導航</a>
 </div>
 <hr>
 <div class="menuitems">
  <a href="" target="_blank">靈圖UU</a>
 </div>
 <div class="menuitems">
  <a href="" target="_blank">路書下載</a>
 </div>
 <hr>
 <div class="menuitems">
  <a href="" target="_blank">關于本站</a>
 </div>
 <div class="menuitems">
  <a href="" target="_bland">友情鏈接</a>
 </div>
 </div>
 <div id="container"> 
 <p>右鍵此區(qū)域</p>
 </div>
 </body>
</html>

其中ajax.js代碼如下：

復制代碼代碼如下:

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e=this;e[0]=yq?parseInt(yq):0;e[1]=uq?parseInt(uq):0;e.EARTH_RADIUS=6378137;e.PI=Math.PI;e.js_point={x:e[0],y:e[1]};e.point=e.MercatorToWGS84(e.js_point);e[0]=e.point.x;e[1]=e.point.y;e.Longitude=e[0];e.Latitude=e[1];};yq(eq.prototype,{getLongitude:function(){var e=this;return e[0];},getLatitude:function(){var e=this;return e[1];},setLongitude:function(yq){var e=this;e[0]=parseInt(yq);},setLatitude:function(yq){var e=this;e[1]=parseInt(yq);},MercatorToWGS84:function(yq){var e=this;var uq=yq;var iq=e.PI*e.EARTH_RADIUS/180.0;var oq=yq.x/iq;var pq=yq.y/iq;pq=180.0/e.PI*(2*Math.atan(Math.exp(pq*e.PI/180.0))-e.PI/2.0);uq.x=Math.round(oq*100000.0);uq.y=Math.round(pq*100000.0);return uq;}});function rq(){var e=this;e.length=0;e.prefix="shi_2011";};yq(rq.prototype,{put:function(yq,uq){var e=this;e[e.prefix+yq]=uq;e.length++;},get:function(yq){var e=this;return typeof e[e.prefix+yq]==q[5]?null:e[e.prefix+yq];},keySet:function(){var e=this;var yq=new Array();var uq=0;for(var iq in 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uq){e.put(uq[oq],iq[oq]);};}});function tq(){var e=this;e.base64EncodeChars="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";e.base64DecodeChars=new Array(-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,62,-1,-1,-1,63,52,53,54,55,56,57,58,59,60,61,-1,-1,-1,-1,-1,-1,-1,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,-1,-1,-1,-1,-1,-1,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,-1,-1,-1,-1,-1);};yq(tq.prototype,{base64encode:function(yq){var uq,iq,oq;var 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false;yq(i,{LTEvent:a,LTPoint:W,LTObjectLoader:E,LTAjax:S,LTPointMercator:wq,LTPointWGS84:eq,LTHashMap:rq,LTBase64:tq});Q();};LTNS();

示例2：

運行效果截圖如下：

具體代碼如下：

<!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>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>自定義右鍵菜單</title>
<style type="text/css"> 
body,ul,li{margin:0;padding:0;}
body{font:12px/24px arial;}
#menu{position:absolute;top:-9999px;left:-9999px;width:100px;border-radius:3px;list-style-type:none;border:1px solid #8f8f8f;padding:2px;background:#fff;}
#menu li{position:relative;height:24px;padding-left:24px;background:#eaead7;vertical-align:top;}
#menu li a{display:block;color:#333;background:#fff;padding-left:5px;text-decoration:none;}
#menu li.active{background:#999;}
#menu li.active a{color:#fff;background:#8f8f8f;}
#menu li em{position:absolute;top:0;left:0;width:24px;height:24px;background:url(images/ico.png) no-repeat;}
#menu li em.cur{background-position:0 0;}
#menu li em.copy{background-position:0 -24px;}
#menu li em.paste{background-position:0 -48px;}
</style>
<script type="text/javascript"> 
window.onload = function ()
{
 var oMenu = document.getElementById("menu");
 var aLi = oMenu.getElementsByTagName("li");
 //加載后隱藏自定義右鍵菜單
 oMenu.style.display = "none";
 //菜單鼠標移入/移出樣式
 for (i = 0; i < aLi.length; i++)
 {
 //鼠標移入樣式
 aLi[i].onmouseover = function ()
 {
  this.className = "active" 
 };
 //鼠標移出樣式
 aLi[i].onmouseout = function ()
 {
  this.className = "" 
 }
 }
 //自定義菜單
 document.oncontextmenu = function (event)
 {
 var event = event || window.event;
 var style = oMenu.style;
 style.display = "block";
 style.top = event.clientY + "px";
 style.left = event.clientX + "px";
 return false;
 };
 //頁面點擊后自定義菜單消失
 document.onclick = function ()
 {
 oMenu.style.display = "none" 
 }
};
</script>
</head>
<body>
<center>自定義右鍵菜單，請在頁面點擊右鍵查看效果。</center>
<ul id="menu">
 <li><em class="cut"></em><a href="javascript:;">剪切</a></li>
 <li><em class="copy"></em><a href="javascript:;">復制</a></li>
 <li><em class="paste"></em><a href="javascript:;">粘貼</a></li>
</ul>
</body>
</html>

完整實例代碼點擊此處本站下載。

希望本文所述對大家的javascript程序設計有所幫助。

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