代码如下：
1 oncontextmenu='return false 2 3 ondragstart='return false' 4 5 onselectstart='return false' 6 7 onselect='document.selection.empty()' 8 9 oncopy='document.selection.empty()' 10 11 onbeforecopy='return false' 12 13 onmouseup='document.selection.empty()'
iOS中需要添加如下代码：
