Ajax实现模拟关键字智能匹配搜索效果

[  {"id":1,"initial":"ad","keyword":"奥迪"},  {"id":2,"initial":"ada4l","keyword":"奥迪A4L"},  {"id":3,"initial":"ada6l","keyword":"奥迪A6L"},  {"id":4,"initial":"adq5","keyword":"奥迪Q5"},  {"id":5,"initial":"ada3","keyword":"奥迪A3"},  {"id":6,"initial":"adq7","keyword":"奥迪Q7(进口)"},  {"id":7,"initial":"ada8","keyword":"奥迪A8L(进口)"},  {"id":8,"initial":"bm","keyword":"宝马"},  {"id":9,"initial":"bm5x","keyword":"宝马5系"},  {"id":10,"initial":"bm7x","keyword":"宝马7系"},  {"id":11,"initial":"bt","keyword":"本田"},  {"id":12,"initial":"bqsbx25","keyword":"北汽绅宝 X25"},  {"id":13,"initial":"bqsbx35","keyword":"北汽绅宝X35"},  {"id":14,"initial":"bqsbx55","keyword":"北汽绅宝X55"} ] 

<form class="fl search_form" action="#" method="post">  <input class="search_text" id="searchKey" type="search" placeholder="请输入搜索关键字" onkeyup="searchSuggest(this);"/>  <input class="search_btn" type="submit" value="搜索"/> </form> <!--start--智能搜索关键字匹配弹出层--> <ul class="keywords_list"></ul> <!--end--智能搜索关键字匹配弹出层--> 

//当在搜索框输入内容时，根据关键字匹配，显示弹出层 function searchSuggest(obj){  var searchKey=$(obj).val();  var reg = new RegExp(searchKey,"i"); //忽略大小写匹配搜索框中输入的内容  $.ajax({  type:"get",  url:"data/keyword.json",  dataType:"json",  success:function(data){   var arr=[];   for(var i=0,len=data.length;i<len;i++){   if(searchKey!="" && (data[i].initial.search(reg)!=-1 || data[i].keyword.search(reg)!=-1)) {    arr.push("<li onclick='changeSearchKey(this);'>"+data[i].keyword+"</li>");   }   }       $(".keywords_list").html(arr).show();  }  }); } //单击匹配列表中的关键字选项时，将该关键字显示在搜索框中 function changeSearchKey(obj){  var value=$(obj).text();  $("#searchKey").val(value);  $('.keywords_list').hide(); }