<input type = "text" name="keyword" id="keyword"  onkeydown="entersearch()"/>  <input type = "text" name="keyword" id="keyword"  onkeydown="entersearch1(event)"/>  <input type = "button" onclick="search()"/>  

// onclick事件  function search(){      var $keyword = $("#keyword").val();      window.location.href = "http://www.mamicode.com/list-0-0-0-0-"+$keyword+"-0-0-1.html";  }    // 按Enter键,执行事件  function entersearch(){      var event = window.event || arguments.callee.caller.arguments[0];      if (event.keyCode == 13)         {            search();         }  }    // 按Enter键,执行事件  function entersearch1(event){      if (event.keyCode == 13)         {            search();         }  }