Ajax實現類比關鍵字智能匹配搜尋效果的教程

準備資料keyword.json：（這裡只貼出部分資料）

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

html結構

<form class="fl search_form"action="#"method="post">  <input class="search_text"id="searchKey"type="search"placeholder="請輸入搜尋索引鍵"onkeyup="searchSuggest(this);"/>  <input class="search_btn"type="submit"value="搜尋"/> </form> <!--start--智能搜尋索引鍵匹配彈出層--> <ul class="keywords_list"></ul> <!--end--智能搜尋索引鍵匹配彈出層-->

js：

//當在搜尋方塊輸入內容時，根據關鍵字匹配，顯示彈出層 functionsearchSuggest(obj){  varsearchKey=$(obj).val();  varreg =newRegExp(searchKey,"i");//忽略大小寫匹配搜尋方塊中輸入的內容  $.ajax({  type:"get",  url:"data/keyword.json",  dataType:"json",  success:function(data){   vararr=[];   for(vari=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>");   }   }       $(".keywords_list").html(arr).show();  }  }); } //單擊匹配列表中的關鍵字選項時，將該關鍵字顯示在搜尋方塊中 functionchangeSearchKey(obj){  varvalue=$(obj).text();  $("#searchKey").val(value);  $('.keywords_list').hide(); }

效果圖：