jQuery实时刷新显示数据

时间：2024-11-19 07:45:36

创建数据表：demo

--
-- 表的结构 `demo`
--

CREATE TABLE IF NOT EXISTS `demo` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `name` varchar(20) COLLATE utf8_bin NOT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB  DEFAULT CHARSET=utf8 COLLATE=utf8_bin AUTO_INCREMENT=5 ;

--
-- 转存表中的数据 `demo`
--

INSERT INTO `demo` (`id`, `name`) VALUES
(1, '雷军'),
(2, '马化腾'),
(3, '李彦宏'),
(4, '马云');

服务器文件：

<?php
$mysqli = new mysqli("localhost","root","","test");
$mysqli->set_charset('utf8');
$query = 'SELECT * FROM demo';
$result = $mysqli->query($query);
$arr = $result->fetch_all(MYSQLI_ASSOC);
$info = json_encode($arr);
echo $json = '{"success":true,"info":'.$info.'}';

显示数据网页: 

<html>
<head>
    <meta charset='utf-8'>
    <title>hello</title>
</head>
<body>
<script src="/js/jquery/1.9.1/jquery-1.9."></script>
<script>
    function check(){
        $.ajax({
            type:"GET",
            url:"./",
            dataType:"json",
            success:function(data){
                if(){
                    var count = ;
                        for(i=0;i<count;i++){
                            var dom = "<tr align='center' id='"+[i].id+"'><td>"+[i].id+"</td><td>"+[i].name+"</td></tr>";
                            var tag = '#'+[i].id;
                            if(!$(tag).length){
                                $("#info").append(dom);
                            }
                        }
                }else{
                    alert('error');
                }
            },
            error:function(res){
                alert();
            }
        });
    }
    (check, 1000); //每秒执行一次
</script>
<body>
    <div style='width:600px;margin:0 auto;'>
        <table border='1' width="600px">
            <thead>
                <tr><th>id</th><th>name</th></tr>
            </thead>
            <tbody id='info'>
                <tr align='center' id='111'><td>111</td><td>测试</td></tr>
            </tbody>
        </table>
    </div>
</body>
</html>

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