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我想在student.php文件中实现点击selectStu.php展示出来的按钮,调用deleteStu.php,从而实现删除数据库中相应id的学生信息。但是点击按钮,JS代码并没有如期运作。
student.php
- <!DOCTYPE html>
- <html lang="en">
- <head>
- <meta charset="UTF-8">
- <meta name="viewport" content="width=device-width, initial-scale=1.0">
- <title>学生</title>
- <link rel="stylesheet" href="style/public.css">
- <link rel="stylesheet" href="style/select.css">
- <script src="script/deleteStu.js" async></script>
- </head>
- <body>
- <?php include "header.php";?>
- <main>
- <?php include 'addStu.php';?>
- <button><a href="index.php">返回</a></button>
- <?php include "selectStu.php";?>
- </main>
- <?php include "footer.php";?>
- </body>
- </html>
复制代码
selectStu.php
- <?php
- //读取配置文件
- $configFile = 'config.json';
- $configMsg = file_get_contents($configFile);
- //解析为数组
- $config = json_decode($configMsg,true);
- //连接数据库参数
- $servername = $config['host'];
- $username = $config['username'];
- $password = $config['password'];
- $database = $config['database'];
- //创建连接
- $conn = new mysqli($servername, $username, $password, $database);
- //检测连接
- if($conn->connect_error){
- die("连接失败" . $conn->connect_error);
- }
- //echo "连接成功!";
- //查询语句
- $selectAll = "SELECT * FROM `student`";
- $result = $conn->query($selectAll);
- //输出数据
- if($result->num_rows > 0){
-
- while($row = $result->fetch_assoc()){
- //输出信息到页面
- echo "<table>"
- . "<tr>"
- . "<td>" . $row["id"] . "</td>"
- . "<td>" . $row["name"] . "</td>"
- . "<td>" . $row["gender"] . "</td>"
- . "<td>" . $row["klass"] . "</td>"
- . "<td><button id=". $row["id"] ."class='update'>修改</button></td>"
- . "<td><button id=". $row["id"] ."class='delete'>删除</button></td>"
- . "</tr>"
- . "</table>" ;
- }
- }
- ?>
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deleteStu.php
- //这是删除学生信息的PHP
- <?php
- //读取配置文件
- $configFile = 'config.json';
- $configMsg = file_get_contents($configFile);
- //解析为数组
- $config = json_decode($configMsg,true);
- //连接数据库参数
- $servername = $config['host'];
- $username = $config['username'];
- $password = $config['password'];
- $database = $config['database'];
- //创建连接
- $conn = new mysqli($servername, $username, $password, $database);
- //检测连接
- if($conn->connect_error){
- die("连接失败" . $conn->connect_error);
- }
- //获取要删除信息的id
- $id = $_GET["q"];
- //预处理及绑定
- $stmt = $conn->prepare("DELETE FROM student WHERE id = ?");
- $stmt->bind_param("i",$id);
- //执行
- $stmt->execute();
- //关闭
- $stmt->close();
- $conn->close();
- ?>
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deleteStu.js
- //删除学生信息的JS
- //获取元素
- let buttons = document.getElementsByClassName("delete");
- console.log(buttons[0]);
- //添加事件
- for(let i=0;i<buttons.length;i++){
- buttons[i].addEventListener("click",deleteStu);
- console.log(buttons[i]);
- }
- //传递学生id的函数
- function deleteStu(){
- let xmlhttp = new XMLHttpRequest();
- xmlhttp.onreadystatechange=function(){
- if(xmlhttp.readyState==4 && xmlhttp.status==200){
- console.log("传递成功!");
- }
- }
- xmlhttp.open("GET","deleteStu.php?q="+this.id);
- xmlhttp.send();
- }
复制代码
gpt3.5 没这么智能的,还是要靠你自己啊 
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