引用jquery

HTML
`

CSS
`
#sub-menu {
position: absolute; // 重要
z-index: 9999;
background: white;
border: 1px solid;
display: none;
}

		.sub-menu-btn{
			width: 100px;
			background-color: white;
			border: none;
		}

`

JS
`

html右键菜单实现方法