keydown,keypress,keyup,分别是按下,按着没上抬,上抬键盘 
 
<input id="gotoPage" type="button" value="回车按钮" onclick="hc()"/>
 
<script>
  $(document).keydown(function (event) {
          if (event.keyCode == 13) {
              $("#gotoPage").trigger("click");
          }
      });
      function hc() {
          alert("触发成功")
      }
</script>