JS input文本框禁用右键和复制粘贴功能的代码_javascript技巧

function click(e)
{
if (document.all)
{
if (event.button==1||event.button==2||event.button==3)
{
oncontextmenu='return false';
}
}
if (document.layers)
{
if (e.which == 3)
{
oncontextmenu='return false';
}
}
}
if (document.layers)
{
document.captureEvents(Event.MOUSEDOWN);
}
document.onmousedown=click;
document.oncontextmenu = new Function("return false;")
var trxdyel=true
var hotkey=17 /* hotkey即为热键的键值,是ASII码,这里99代表c键 */
if (document.layers)
document.captureEvents(Event.KEYDOWN)
function gogo(e)
{
if (document.layers)
{
if (e.which==hotkey && trxdyel)
{
alert('操作错误.或许是您按错键了!');
}
}
else if (document.all)
{
if (event.keyCode==hotkey&&trxdyel){ alert('操作错误.或许是您按错键了!'); }}
}
document.onkeydown=gogo

oncontextmenu="window.event.returnValue=false"

no

可用于Table
function click() {
if (event.button==2) {
alert('对不起，本页禁用右键！')
}
}
document.onmousedown=click

onpaste="return false"

oncopy="return false;" oncut="return false;"