function click()
{
if(event.button==2)
{
alert(‘hello。。。。。。‘)
}
}
document.onmousedown=click
<body oncontextmenu=self.event.returnValue=false>
<body ondragstart="window.event.returnValue=false" oncontextmenu="window.event.returnValue=false" onselectstart="event.returnValue=false">
原文:https://www.cnblogs.com/friday69/p/9178889.html