jquery阻止键盘事件

Question

让键盘事件失效

Answer 1

document.onkeydown=keydown;
function keydown(){
   return false;
}

Answer 2

$('input').keyup(funciton(){
    return false;
});

Answer 3

document.onkeydown=function keydown(){
   return false;
}

Answer 4

off解绑