thinkPHP+mysql+ajax實(shí)現(xiàn)的仿百度一下即時(shí)搜索效果詳解

?php
namespace Wechat\Controller;
use Think\Controller;
/**
 * 學(xué)校模塊控制層
 */
class SchoolController extends Controller {
  //學(xué)校選擇頁(yè)面
  public function index(){
    $County = D("County");
    $School = D("School");
    //獲取所有的省份列表
    $cityList = $County->where("pid = 0")->order("sort desc")->select();
    //遍歷省份數(shù)據(jù)，獲取二級(jí)城市列表
    foreach ($cityList as $key => $value) {
      $countyList[] = $County->where("pid = ".$value['id'])->order("sort desc")->select();
    }
    //如果url傳過來(lái)省級(jí)編號(hào)，就保存，否則就默認(rèn)山東為要顯示的省份
    if(!empty($_GET['cityid'])){
      $cityid = $_GET['cityid'];
    }else{
      //6號(hào)代碼山東的城市編號(hào)
      $cityid = 6;
    }
    //查詢此省份編號(hào)中的所有城市
    $countyList = $County->where("pid = ".$cityid)->order("sort desc")->select();
    //查詢城市中的所有學(xué)校
    foreach ($countyList as $key => $value) {
      $countyList[$key]['school'] = $School->where("cid = ".$value['id'])->select();
    }
    //給視圖層賦值
    $this->assign("cityList",$cityList);
    $this->assign("countyList",$countyList);
    //顯示視圖層
    $this->display();
  }
  //根據(jù)關(guān)鍵字進(jìn)行查找
  public function get_school_by_key(){
    $key = $_POST['key'];//獲取關(guān)鍵字
    if(empty($key))
      $this->ajaxReturn(array("flag"=>0,"data"=>array())); //如果關(guān)鍵字為空，就返回空數(shù)組
    //查詢學(xué)校
    $School = D("School");
    $where['name'] = array("like","%".$key."%");
    $schoolList = $School->where($where)->limit("6")->select();
    if(empty($schoolList))
      $this->ajaxReturn(array("flag"=>0,"data"=>array()));//如果數(shù)據(jù)為空，也返回空數(shù)組
    $this->ajaxReturn(array("flag"=>1,"data"=>$schoolList));//返回學(xué)校列表
  }
}

!DOCTYPE HTML>
html>
head>
meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no">
meta http-equiv="Content-Type" content="text/html; charset=utf-8">
link rel="stylesheet"  href="__PUBLIC__/Wechat/css/choose.css?20150819" rel="external nofollow" type="text/css">
script src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js" type="text/javascript">/script>
title>選擇所在學(xué)校/title>
/head>
body style="overflow:-Scroll;overflow-x:hidden">
div class="title"> 請(qǐng)選擇您所在學(xué)校 /div>
div class="search-w">
 input class="search" type="text" name="k"  placeholder="快速搜索您所在的城市或?qū)W校" value="">
 !--需要?jiǎng)討B(tài)顯示的數(shù)據(jù)列表框-->
 ul class="list">
 /ul>
/div>
div class="wraper">
 div class="center">
  div class="left">
   ul>
    !--顯示所有的省份-->
    foreach name="cityList" item="city">
      li id="box{$city.id}">a href="__APP__/School/index/cityid/{$city.id}" rel="external nofollow" >{$city.name}/a>/li>
    /foreach>
   /ul>
  /div>
  div class="right">
   !--顯示所有城市 -->
   foreach name="countyList" item="county">
    ul>
    p>{$county.name}/p>
    !--顯示城市里面的學(xué)校-->
    foreach name="county['school']" item="school">
      li>a href="__APP__/Dormitory/index/sid/{$school.sid}" rel="external nofollow" >{$school.name}/a>/li>
    /foreach>
    /ul>
   /foreach>
  /div>
 /div>
/div>
/body>
script>
$(function(){
 //響應(yīng)鍵盤事件
 $('.search-w input[name="k"]').keyup(function(){
  //發(fā)送post請(qǐng)求，地址為控制器中的get_school_by_key方法,參數(shù)為輸入的內(nèi)容
  $.post('__APP__/School/get_school_by_key',{'key':$(this).val()},function(data){
      var data = eval('('+data+')');
      //如果數(shù)據(jù)不為空
      if(data.flag){
       //清空ul中的數(shù)據(jù)并顯示
       $(".list").empty();
       $('.list').css('display','block');
       // 循壞遍歷返回值,并添加到li中
       $(data.data).each(function(position){
        $(".list").append("li>a href='__APP__/Dormitory/index/sid/"+data.data[position].sid+"'>"+data.data[position].name+"/a>/li>");
       });
     }else{
      //不顯示
      $('.list').css('display','none');
     }
   });
 });
});
/script>
/html>

/* CSS Document */
* {
  margin:0;
  padding:0;
}
body {
  background:#FBFBFB;
  width:100%;
}
ul {
  list-style:none;
}
a {
  text-decoration:none;
}
.right ul li a:active {
  color:#FF5C57;
}
.left ul li a:active {
  color:#FF5C57;
}
.right ul li a:hover {
  color:#FF5C57;
}
.left ul li a:hover {
  color:#FF5C57;
}
.title {
  background:#C32D32;
  height:50px;
  width:100%;
  line-height:50px;
  text-align:center;
  font-family:Arial, Helvetica, sans-serif;
  font-size:18px;
  color:#FFF;
}
.search-w {
  text-align:center;
  width:100%;
  height:50px;
}
.search {
  width:95%;
  height:30px;
  text-align:center;
  margin-top:1%;
  border:#ccc 1px solid;
  font-size:14px;
  background: #FFF url(image/s1.png) no-repeat 15% 5px;
}
.list {
  width:95%;
  text-align:left;
  border:#ccc 1px solid;
  font-size:14px;
  margin:0 auto;
  background:#FFF;
   position:relative;
}
.list li {
  height:35px;
  width:100%;
  line-height:35px;
  border-bottom:#DFDFDF 1px solid;
}
.list li a{color:#939393; width:100%; height:100%; display:block;}
.list li a:hover {
  color:#ff5c57;
}
.wraper{
  width: 100%;
  height:100%;
}
.center{
  width:95%;
  height:100%;
}
.left {
  margin-top:5px;
  width:19.9%;
  background:#FBFBFB;
  float:left;
  border-top:#DFDFDF 1px solid;
  overflow:hidden;
}
.left ul {
  width:100%;
  height:100%;
}
.left ul li {
  height:60px;
  line-height:60px;
  border-bottom:#F1F1F1 1px solid;
  text-align:center;
  border-right:1px solid #C0C0C0;
}
.left ul li a {
  color:#939393;
  font-weight: bold;
  height:100%;
  width:100%;
  display:block;
}
.right {
  margin-top:5px;
  width:80%;
  background:#FFF;
  float:left;
  border-top:#DFDFDF 1px solid;
}
.right ul li a {
  padding-left: 5%;
  color:#939393;
  height:100%;
  width:95%;
  display:block;
}
.right ul {
  width:100%;
  height:100%;
}
.right ul li {
  height:45px;
  line-height:45px;
  width:100%;
  text-align:left;
  border-bottom:#E8E8E8 1px solid;
  color:#7C7C7C;
}
.right ul p{
  height:45px;
  line-height:45px;
  width:100%;
  text-align:center;
  border-bottom:#E8E8E8 1px solid;
  color:#939393;
  font-weight: bold;
  font-size: 18px;
}