oncontextmenu="return false" ：禁止右键
onselectstart="return false" : 禁止选取
onpaste = "return false" : 禁止粘贴
oncopy = "return false" : 禁止复制
oncut = "return false" : 禁止剪贴
onselectstart= "return false " :禁止选择
ondrag= "return false " ：禁止拖拽
<body onSelectStart=return(event.srcElement.type== "text ")>
Input: <input value= "select ">