我是PHP的初学者。基本上我试图在表的行中添加一个名为“delete”的按钮。但是：
感谢您提供任何帮助或建议。
更新：我已经修复了问题1.但是当我按下任何帮助时，我无法获得问题2 onClick功能删除任何表数据。
更新1：Admin.php代码
<!DOCTYPE html>
<html>
<head> <!--inseart script here -->
<script type= "text/javascript" src="js/jquery.js"></script> <!-- jquery script -->
<script type= "text/javascript" src="js/func_submit_msg.js"></script>
</head>
<body>
Message: <input type="text" name="message" id= "message_form"><br> <!-- br break new line -->
<input type="submit" id= "submit_form" onclick = "submit_msg()">
<div id="result"></div>
<table border= "1" style="width: 100%">
<!--create top table -->
<tr> <!--tr defines a row --> <!-- define row 1 -->
<th> No </th> <!-- th defines a header cell-->
<th> messages </th>
<th> action </th>
</tr>
<!-- row 2 : display results onwards and creates dynamically -->
<!-- input fields at the bottom -->
<?php
include "connect.php";
$get_data2admin = $db->query("SELECT ID,message FROM test_table_1");
if( $get_data2admin->num_rows >0 ){ //if selected rows is more than zero
while($row_msg = $get_data2admin->fetch_assoc()){
//insert html tag table inside echo
echo "<tr>";
echo "<td></td>";
echo "<td>".$row_msg['message']. "</td>";
echo "<td>"."<input type='submit' name='delete' id='delete_row' value='Delete' onClick='Delete()'>"."</td>"; //new updated line
echo "</tr>";
}
}
?>
</table>
</body>
</html>
更新1：func_submit_msg.js（可能会将此文件重命名为global.js以避免混淆）
//this is a function file to submit message to database, use include before calling function
$(document).ready(function(){
$('#submit_form').on('click', function(e){
e.preventDefault();
message_form = $('#message_form').val();
$.ajax({
type: "POST",
url: "submit_data.php",
data: {message: message_form},
success: function(data) {
$('#result').html(data);
},
error:function(err){
//handle your error
alert('did not work');
}
});
});
$function Delete() {
$('input[name="delete"]').on('click', function(e){
e.preventDefault();
var show_id=$(this).attr('id') //to grab id of element
if(confirm("Are you sure you wish to delete")){
$.ajax({
type: "POST",
url: "delete.php",
data: {show_id},
success: function() {
},
error:function(err){
//handle your error
alert('did not work');
}
});
});
});
});
});
原始讯息：
主按钮代码与onclick函数一起位于admin.php页面中：
admin.php的
<!DOCTYPE html>
<html>
<head> <!--inseart script here -->
<script type= "text/javascript" src="js/jquery.js"></script> <!-- jQuery script -->
<script type= "text/javascript" src="js/func_submit_msg.js"></script>
</head>
<body>
Message: <input type="text" name="message" id= "message_form"><br> <!-- br break new line -->
<input type="submit" id= "submit_form" onclick = "submit_msg()">
<div id="result"></div>
<table border= "1" style="width: 100%">
<!--create top table -->
<tr> <!--tr defines a row --> <!-- define row 1 -->
<th> No </th> <!-- th defines a header cell-->
<th> messages </th>
<th> action </th>
</tr>
<!-- row 2 : display results onwards and creates dynamically -->
<!-- input fields at the bottom -->
<?php
include "connect.php";
$get_data2admin = $db->query("SELECT ID,message FROM test_table_1");
if( $get_data2admin->num_rows >0 ){ //if selected rows is more than zero
while($row_msg = $get_data2admin->fetch_assoc()){
//insert html tag table inside echo
echo "<tr>";
echo "<td></td>";
echo "<td>".$row_msg['message']. "</td>";
echo "<td>"."<input type='submit' name='delete' id='delete_row' onclick =' '>"."</td>"; //in this scenario the indents ' and " matters
echo "</tr>";
}
}
?>
</table>
</body>
以下是名为func_submit_msg.js的javascript文件，它具有ajax删除功能（代码的第二个功能）
//this is a function file to submit message to database, use include before calling function
$(document).ready(function(){
$('#submit_form').on('click', function(e){
e.preventDefault();
message_form = $('#message_form').val();
$.ajax({
type: "POST",
url: "submit_data.php",
data: {message: message_form},
success: function(data) {
$('#result').html(data);
},
error:function(err){
//handle your error
alert('did not work');
}
});
});
$('#delete_row').on('click', function(e){
e.preventDefault();
var show_id=this.id //to grab id of element
if(confirm("Are you sure you wish to delete")){
$.ajax({
type: "POST",
url: "delete.php",
data: {show_id},
success: function() {
},
error:function(err){
//handle your error
alert('did not work');
}
});
});
});
一个delete.php文件，假设按id元素删除行
<?php
include "connect.php";
if($_POST['show_id'])
{
$delete_id=$db->query("DELETE FROM test_table_1 WHERE ID='$show_id'");
}
if ($insert_data === TRUE ){
echo "Delete successfully";
} else {
echo "Error delete: " . $insert_data . "<br>" . $db->error;
}
$db->close();
?>
答案 0 :(得分：1)
对于第1点：
<input type='submit' name='delete' id='delete_row' onclick ='Delete(<?php echo $row_msg['id']?>)' value="Delete">
对于第2点：
<input type='submit' name='delete' id='delete_row' onclick ='Delete(<?php echo $row_msg['id']?>)'>
答案 1 :(得分：0)
1.像这样改变删除按钮
<input type='submit' name='delete' id='delete_row' onclick ='Delete(<?php echo $row_msg['id']?>)'>
假设你有任何唯一ID，所以我在onclick函数中提到如果你有其他名字就改变它
function Delete(id)
{
var x = confirm("Are you sure you want to delete?");
if(x)
{
$.ajax({
type: "POST",
url: "delete.php",
data: {id:id},
success: function() {
},
error:function(err){
//handle your error
alert('did not work');
}
});
});
}
答案 2 :(得分：0)
从SQL结果中将唯一ID作为ID，并将删除行的jQuery代码用作：
$('input[name="delete"]').on('click', function(e){
e.preventDefault();
var show_id=$(this).attr('id');
//...
});
我希望这能解决问题。