文本框輸入數值後不觸發提交按鈕的情況下綁定數據

<script  language="javascript" type="text/javascript" >


    function keyDown() {
        var keycode = event.keyCode;
        var keyChar = String.fromCharCode(keycode);
        if (event.keyCode == 13 && event.srcElement.type != 'button' && event.srcElement.type != 'submit' && event.srcElement.type != 'reset' && event.srcElement.type != '') {
            event.keyCode = 9;

            if ($.trim($("#txtFindMember").val()) != "") {
                BtnFindMember();//這個是關鍵！
            }
        }
    }

    document.onkeydown = keyDown;
    
       
  
 </script>