<form class="form-inline" role="form">
         <input type="text" class="form-control search" id="search-input" placeholder="搜索用户发言记录...">
         <button class="btn btn-primary search" id="search-button" type="button">Go</button>
</form>

<script>
$("button.search").click(function(){
      location.href="http://www.baidu.com";
    })

$('input.search').keydown(function()
    {
      //alert("dsdsds");
      var event =window.event||arguments.callee.caller.arguments[0];
      if(event.keyCode== 13){
              $("#search-button").click();//搜索函数
        }
    })
</script>