简单的js监听键盘录入

document.onkeydown =function(evt){
  var evt = window.event?window.event:evt;
  if(evt.keyCode==13 ){
   var name=$("input[name=name]").attr("value");
   var password=$("input[name=password]").attr("value");
   if(name!="" && password!=""){
    var parameter="name="+name+"&password="+password;
    $.post("<%=path%>/redirect/key/log?"+parameter,function(result){
     var jsonData = eval(result);
     if(jsonData[0].success=="true"){
      window.location.href="http://127.0.0.1:8089/rdfcc/portal/redirecte/login.jsp?SN="+jsonData[0].SN;
     }else{
      alert(jsonData[0].msg);
      window.history.go(-1);
     }
      });
   }else{
    alert("请输入完整的信息");
   }
  }
 }