一种做输入的校验 同是可以验证不让粘贴复制

jQuery(function($){
$("#briefingNo").keydown(function(){
document.getElementById("briefingNo").onpaste = function(){return false;}
if((event.keyCode >=96 && event.keyCode <=105)
       ||(event.keyCode >=48 && event.keyCode  <= 57)
       ||event.keyCode == 8
       ||event.keyCode == 9
       ||event.keyCode == 46
       ||event.keyCode == 37
       ||event.keyCode == 38
       ||event.keyCode == 39
       ||event.keyCode == 40
       ||event.keyCode == 189
       ||event.keyCode == 187
       ||event.keyCode == 192
       ||(event.keyCode>=65 && event.keyCode<=90)){
       return true;      
       }else{
       return false;
       }
       });
});