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ajax 实现输入提示效果

2018-06-22 05:30:40来源：未知阅读 ()

网站主页

       <!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        *{
            margin:0px auto;
            padding:0px;
        }
        .l{
            height:50px;
            width:198px;
            border-bottom:1px solid black;
            text-align: center;
            line-height:40px;
            vertical-align: middle;
        }
    </style>
    <script src="../wenjian/jquery-2.2.3.min.js"></script>
</head>
<body>
<div style="height: 50px;width: 200px"><input type="text" id="name" style="width: 198px;height: 48px;"></div>
<div id="list" style="height: 500px;width: 200px;border: 1px solid black">
<!--<div id="l">zhongguo</div>-->
</div>

</body>
</html>
<script>
$("#name").keyup(function () {
    var n = $("#name").val();
    if (n != ""){
    $.ajax({
        url:'ltchuli.php',
        data:{n:n},
        type:'post',
//        dataType:'text',
        dataType:'json',
        success:function (data) {
//text写法
//          var s = data.split("|");
//          var str = "";
//          for (var i=0;i<s.length;i++)
//          {
//              str = str + "<div class='l'>" +s[i] +"</div>";
//          }
//          $("#list").html(str);
//json写法

            for (var i in data){
                $("#list").append("<div class='l'>" +data[i] +"</div>");
            }
        }
    });
}else {
        $("#list").html("");
    }
})
</script>

处理页面

<?php
/**
 * Created by fcc
 * User: Administrator
 * Date: 2017/10/30
 * Time: 9:52
 */
$n = $_POST['n'];
require_once "../wenjian/DBDA.class.php";
$db = new DBDA();
$obj = "select region_name from region WHERE region_name LIKE '%{$n}%' ";
$data = $db->Query($obj);
//echo $data;
echo json_encode($data);