本文实例讲述了JS实现的自定义右键菜单。分享给大家供大家参考。具体如下：
示例1：
运行效果截图：
具体代码如下：
<!DOCTYPE html> <html> <head> <title>JS实现自定义右键菜单</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'); /*显示菜单*/ function showMenu() { var evt = window.event || arguments[0]; /*获取当前鼠标右键按下后的位置，据此定义菜单显示的位置*/ var rightedge = container.clientWidth-evt.clientX; var bottomedge = container.clientHeight-evt.clientY; /*如果从鼠标位置到容器右边的空间小于菜单的宽度，就定位菜单的左坐标（Left）为当前鼠标位置向左一个菜单宽度*/ if (rightedge < menu.offsetWidth) menu.style.left = container.scrollLeft + evt.clientX - menu.offsetWidth + "px"; else /*否则，就定位菜单的左坐标为当前鼠标位置*/ menu.style.left = container.scrollLeft + evt.clientX + "px"; /*如果从鼠标位置到容器下边的空间小于菜单的高度，就定位菜单的上坐标（Top）为当前鼠标位置向上一个菜单高度*/ if (bottomedge < menu.offsetHeight) menu.style.top = container.scrollTop + evt.clientY - menu.offsetHeight + "px"; else /*否则，就定位菜单的上坐标为当前鼠标位置*/ menu.style.top = container.scrollTop + evt.clientY + "px"; /*设置菜单可见*/ menu.style.visibility = "visible"; LTEvent.addListener(menu,"contextmenu",LTEvent.cancelBubble); } /*隐藏菜单*/ 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"> <div> <a href="javascript:history.back();">后退</a> </div> <div> <a href="javascript:history.back();">前进</a> </div> <hr> <div> <a href="" target="_blank">地图api</a> </div> <div> <a href="" target="_blank">实时交通</a> </div> <div> <a href="" target="_blank">地图搜索</a> </div> <div> <a href="" target="_blank">驾驶导航</a> </div> <hr> <div> <a href="" target="_blank">灵图UU</a> </div> <div> <a href="" target="_blank">路书下载</a> </div> <hr> <div> <a href="" target="_blank">关于本站</a> </div> <div> <a href="" target="_bland">友情链接</a> </div> </div> <div id="container"> <p>右键此区域</p> </div> </body> </html>
其中ajax.js代码如下：
复制代码 代码如下:
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示例2：
运行效果截图如下：
具体代码如下：
<!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>自定义右键菜单</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"); //加载后隐藏自定义右键菜单 oMenu.style.display = "none"; //菜单鼠标移入/移出样式 for (i = 0; i < aLi.length; i++) { //鼠标移入样式 aLi[i].onmouseover = function () { this.className = "active" }; //鼠标移出样式 aLi[i].onmouseout = function () { this.className = "" } } //自定义菜单 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; }; //页面点击后自定义菜单消失 document.onclick = function () { oMenu.style.display = "none" } }; </script> </head> <body> <center>自定义右键菜单，请在页面点击右键查看效果。</center> <ul id="menu"> <li><em></em><a href="javascript:;">剪切</a></li> <li><em></em><a href="javascript:;">复制</a></li> <li><em></em><a href="javascript:;">粘贴</a></li> </ul> </body> </html>
完整实例代码点击此处本站下载。
希望本文所述对大家的javascript程序设计有所帮助。
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