如何使用jQuery POST代替html表单删除表项
如何使用jQuery POST代替html表单删除表项
提问于 2018-06-11 02:05:48
我试图在不使用jQuery post打开.php文件的情况下删除表项。当我只使用常见的html post表单时，整个工作都没有问题。
警报(Data)不会触发，它只会在URL中添加".../?player_ ID _del=1“或其他ID。
我做错了什么？
这是我的一些index.php，我从一个数据库中获得了全部数据：
<table class = "table table-hover">
<thead>
<tr>
<th>Player_ID</th>
<th>Username</th>
<th>First_Name</th>
<th>Last_Name</th>
<th>Rating</th>
<th>Country</th>
<th>Colour</th>
<th></th>
</tr>
</thead>
<tbody>
<? foreach($playerArray as $player):?>
<tr>
<td><? echo $player["PLAYER_ID"]; ?></td>
<td><? echo $player["USERNAME"]; ?></td>
<td><? echo $player["FIRST_NAME"]; ?></td>
<td><? echo $player["LAST_NAME"]; ?></td>
<td><? echo $player["RATING"]; ?></td>
<td><? echo $player["COUNTRY"]; ?></td>
<td><? echo $player["COLOUR"]; ?></td>
<td>
<form id="del-form">
<div>
<input type="number" id="player_id_del" name="player_id_del" value="<?php echo htmlspecialchars($player["PLAYER_ID"]); ?>" />
</div>
<div>
<button type="submit" id="submit-btn" class="btn btn-danger">Delete</button>
</div>
</form>
<script>
$("#submit-btn").click(function(){
$.post("deletePlayer.php", $("#del-form").serialize() , function(data) {
alert(data);
});
});
</script>
</td>
</tr>
<? endforeach ?>
</tbody>
</table>这是我的deletePlayer.php：
<?php
//include DatabaseHelper.php file
require_once('DatabaseHelper.php');
//instantiate DatabaseHelper class
$database = new DatabaseHelper();
//Grab variable id from POST request
$player_id = '';
if(isset($_POST['player_id_del'])){
$player_id = $_POST['player_id_del'];
}
// Delete method
$error_code = $database->deletePlayer($player_id);
// Check result
if ($error_code == 1){
echo "Player with ID: '{$player_id}' successfully deleted!'";
}
else{
echo "Error can't delete Player with ID: '{$player_id}'. Errorcode: {$error_code}";
}
?>提前感谢您的帮助！
回答 2
Stack Overflow用户
回答已采纳
发布于 2018-06-11 02:17:03
你的代码中有很多问题，例如表单和删除输入按钮的id是重复的(元素的id不应该是相同的，它应该是唯一的)，下面的代码是经过测试和工作的。
<?php
//include DatabaseHelper.php file
require_once('DatabaseHelper.php');
//instantiate DatabaseHelper class
$database = new DatabaseHelper();
$response = array();
//Grab variable id from POST request
$player_id = '';
if(isset($_POST['player_id_del'])){
$player_id = $_POST['player_id_del'];
}
// Delete method
$error_code = $database->deletePlayer($player_id);
// Check result
if ($error_code == 1){
$response["success"] = 1;
$response["id"] = $player_id;
$response["message"] = "Player with ID: '{$player_id}' successfully deleted!'";
}
else{
$response["success"] = 0;
$response["message"]= "Error can't delete Player with ID: '{$player_id}'. Errorcode: {$error_code}";
}
echo json_encode($response);
?><table class = "table table-hover" id="mPlayersTabel">
<thead>
<tr>
<th>Player_ID</th>
<th>Username</th>
<th>First_Name</th>
<th>Last_Name</th>
<th>Rating</th>
<th>Country</th>
<th>Colour</th>
<th></th>
</tr>
</thead>
<tbody>
<? foreach($playerArray as $player):?>
<tr id= "<? echo $player["PLAYER_ID"]; ?>">
<td><? echo $player["PLAYER_ID"]; ?></td>
<td><? echo $player["USERNAME"]; ?></td>
<td><? echo $player["FIRST_NAME"]; ?></td>
<td><? echo $player["LAST_NAME"]; ?></td>
<td><? echo $player["RATING"]; ?></td>
<td><? echo $player["COUNTRY"]; ?></td>
<td><? echo $player["COLOUR"]; ?></td>
<td>
<div>
<button type="submit" player-id="<? echo $player["PLAYER_ID"]; ?>" class="btn btn-danger" >Delete</button>
</div>
</td>
</tr>
<? endforeach ?>
</tbody>
</table>
<script>
$(document).ready(function(){
$(".btn-danger").on("click touchend" , function(){
var id = $(this).attr("player-id");
$.ajax({
url: 'deletePlayer.php',
type: 'POST',
data: {
player_id_del: id
},
dataType: 'json',
success: function (response) {
//Add this line and try
response = JSON.parse(JSON.stringify(response));
alert(response['message']);
switch (response['success']) {
case 1:
$("#mPlayer" + response['id']).remove();
break;
}
}
});
});
});
</script>
Stack Overflow用户
发布于 2018-06-11 02:17:51
默认情况下，jQuery的click事件会重新加载文档，因此您应该尝试使用，
$("#submit-btn").click(function(e){
e.preventDefault();
e.stopPropagation();
});另外，尝试使用$.ajax而不是$.post
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原文链接：
https://stackoverflow.com/questions/50786625
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