<!DOCTYPE html>
<html>
<head>
<title>右键菜单</title>
<style>
<!--
body{background: #222; font: 14px 'Microsoft Yahei', Arial;}
ul,li{list-style: none;padding:0;margin:0;}
a{text-decoration: none;color:#000;}
#wrap {
width: 800px;
height: 550px;
border:1px solid #FF9C00;
background: #F0E6AF;
position:relative;
margin: .5em auto;
}
#wrap ul {
background: #eee;
border: 1px solid #999;
width: 150px;
position: absolute;
display: none;
-moz-box-shadow: 3px 3px 9px #999;
-webkit-box-shadow: 3px 3px 9px #999;
-o-box-shadow: 3px 3px 9px #999;
box-shadow: 3px 3px 9px #999;
}
#wrap ul li {
border-bottom: 1px solid #ddd;
line-height: 24px;
}
#wrap li.no {border-bottom: none;}
#wrap ul li a {
display: block;
padding-left: .5em;
}
#wrap ul li a:hover {
background-color: #FFBD00;
}
-->
</style>
<script type="text/javascript">
//<![CDATA[
function $(id) {
return document.getElementById(id);
};
var EventUnit = {
addHandler: function(element, type, handler) {//添加事件处理程序
if(element.addEventListener) {
element.addEventListener(type, handler, false);
} else if(element.attachEvent) {
element.attachEvent('on' + type, handler);
} else {
element['on' + type] = handler;
};
},
getEvent: function(event) {
return event ? event : window.event;
},
preventDefault: function(event) {//取消事件默认动作
if(event.preventDefault) {
event.preventDefault();
} else {
event.returnValue = false;
};
}
}
EventUnit.addHandler(window, 'load', function() {
var wrap = $('wrap');
var menu = $('menu');
var menuStyle = menu.style.display;
var x = wrap.offsetLeft + wrap.clientWidth, y = wrap.offsetTop + wrap.clientHeight;
var w = 0, h = 0;
var left = 0, top = 0;
EventUnit.addHandler(wrap, 'contextmenu', function(event) {
event = EventUnit.getEvent(event);
EventUnit.preventDefault(event);
menu.style.display = 'block';
w = menu.clientWidth;
h = menu.clientHeight;
left = (x - event.clientX >= w) ? event.clientX - wrap.offsetLeft : event.clientX - wrap.offsetLeft - w;
top = (event.clientY + h <= y) ? event.clientY - wrap.offsetTop : event.clientY - wrap.offsetTop - h;
menu.style.left = left + 'px';
menu.style.top = top + 'px';
});
EventUnit.addHandler(document, 'click', function() {
menu.style.display = menuStyle;
});
});
//]]>
</script>
</head>
<body>
<div id="wrap">
<p>单击右键看效果~</p>
<ul id="menu">
<li><a href="#">撤销</a></li>
<li><a href="#">重做</a></li>
<li><a href="#">复制</a></li>
<li><a href="#">粘贴</a></li>
<li><a href="#">大小写转换</a></li>
<li><a href="#">回车</a></li>
<li><a href="#">拼写检查</a></li>
<li><a href="#">新建</a></li>
<li><a href="#">自定义</a></li>
<li><a href="#">图形选项</a></li>
<li class="no"><a href="#">关闭</a></li>
</ul>
</div>
</body>
</html>