本文实例讲述了Javascript实现的简单右键菜单类。分享给大家供大家参考。具体如下：
这是自己写的一个右键菜单类，屏蔽掉了IE固有的右键菜单，一共有四个参数：第一个是出发显示右键菜单的div的id
第二个是右键菜单这个层的id，根据这个id去创建一个新的层，menuList是菜单项的列表，对应了点击一个菜单项后触发的函数，classList是菜单的class名称，以及菜单项对应的class名称，包含了鼠标滑过时的class。
运行效果截图如下：
在线演示地址如下：
http://demo.jb51.net/js/2015/js-right-button-menu-class-codes/
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=gb2312" /> <title>右键菜单</title> <style type="text/css"> .cmenu { position:absolute; top:100px; left:100px; width:200px; height:200px; background-color:white; border:1px solid pink; } .liAble { font-family:"宋体"; color:#6699CC; margin-left:10px; margin-top:5px; list-style-type:none; cursor:default; } .liMouseOver { margin-left:10px; margin-top:5px; background-color:#CCFFFF; list-style-type:none; cursor:default; } </style> </head> <body> <div id="x"> </div> <input type="hidden" id="value1" value="4" /> <input type="hidden" id="value2" value="5" /> <script type="text/javascript"> //右键菜单类 function RightHandMenu(div,menuDiv,menuList,classList) { var oThis = this; this._menuList = { } this._classList = { objClass:'', MenuClass:'', liAbleClass:'', liMouseOverClass:'' } this.Init = function() { this._obj = $(div); this._obj.oncontextmenu = function(e){oThis.ShowMenu(e)}; this._obj.className = this._classList.objClass; document.onclick = function(){oThis.HiddenMenu()}; objToObj(this._classList, classList); objToObj(this._menuList, menuList); } this.CreateMenu = function() { if($(menuDiv)) { alert("该ID已被占用"); return; } this._menu = document.createElement("DIV"); this._menu.id = menuDiv; this._menu.oncontextmenu = function(e){stopBubble(e)}; this._menu.className = this._classList.MenuClass; this._menu.style.display = "none"; document.body.appendChild(this._menu); } this.CreateMenuList = function() { for(var pro in this._menuList) { var li = document.createElement("LI"); li.innerHTML = pro; this._menu.appendChild(li); li.className = this._classList.liAbleClass; li.onclick = this._menuList[pro]; li.onmouseover = function(){oThis.ChangeLiClass(this,oThis._classList.liMouseOverClass)} li.onmouseout = function(){oThis.ChangeLiClass(this,oThis._classList.liAbleClass)} } } this.ChangeLiClass = function(obj,name) { obj.className = name } this.ShowMenu = function(e) { var e = e || window.event; stopBubble(e); var offsetX = e.clientX; var offsetY = e.clientY; with(this._menu.style) { display = "block"; top = offsetY + "px"; left = offsetX + "px"; } } this.HiddenMenu = function() { this._menu.style.display = "none"; } this.Init(); this.CreateMenu(); this.CreateMenuList(); } function stopBubble(oEvent) { if(oEvent.stopPropagation) oEvent.stopPropagation(); else oEvent.cancelBubble = true; if(oEvent.preventDefault) oEvent.preventDefault(); else oEvent.returnValue = false; } function $(div) { return 'string' == typeof div ? document.getElementById(div) : div; } function objToObj(destination,source) { for(var pro in source) { destination[pro] = source[pro]; } return destination; } //构造右键菜单 function Edit() { alert("edit"); } function Delete() { alert("delete"); } var menuList = { 编辑:Edit, 删除:Delete } var classList = { MenuClass:'cmenu', liAbleClass:'liAble', liMouseOverClass:'liMouseOver' } var x = new RightHandMenu("x","testDiv",menuList,classList) </script> </body> </html>
希望本文所述对大家的JavaScript程序设计有所帮助。
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