oncontextmenu事件 在MAC版火狐浏览器下表现差异

谷歌和其它浏览器

//css*{margin:0;padding:0;}#right-menu{position:absolute;width:150px;visibility:hidden;border:1px solid #bababa;box-shadow: 1px 1px 2px #8e8e8e;}#right-menu li{list-style:none;text-indent:1em;}#right-menu li a{display:block;height:30px;line-height:30px;text-decoration:none;color:#666;font-size: 12px;}#right-menu li a:hover{background:#ebebeb;color:black;}//html
<div id="right-menu"><ul><li><a href="#">打印</a></li><li><a href="#">复制</a></li></ul>
</div>//js
document.oncontextmenu = function(e){if(window.event) e = window.event;var mymenu = document.getElementById("right-menu");mymenu.style.visibility = "visible";mymenu.style.left = e.clientX + 5 +"px";mymenu.style.top = e.clientY + 5 + "px";return false;//阻止右键系统默认的弹出框
};
document.onclick = function(){var mymenu = document.getElementById("right-menu");mymenu.style.visibility = "hidden"; 
}
//除了火狐，oncontextmenu在其他浏览器上的交互 右键mouseup 执行事件
//火狐是mousedown的时候执行 抬起消失

兼容写法

document.oncontextmenu = function(e){return false;
};
document.onmouseup=function(e) {var mymenu = document.getElementById("right-menu");if (!e) e=window.event;if (e.button==0) {mymenu.style.visibility = "hidden"; }if (e.button==2) {mymenu.style.visibility = "visible";mymenu.style.left = e.clientX + 5 +"px";mymenu.style.top = e.clientY + 5 + "px";}
}//思路 
1.阻止默认事件
2.mouseup 右键展示重写菜单 左键隐藏