在HTML中禁止文字的复制
很简单，只需在<body>中添加如下代码：
<body
oncontextmenu='return false'
ondragstart='return false'
onselectstart='return false'
onselect='document.selection.empty()'
oncopy='document.selection.empty()'
onbeforecopy='return false'
onmouseup='document.selection.empty()'
>
