[英]Form submit with AJAX passing form data to PHP without page refresh
[英]How to post data (form) without page refresh PHP, jQuery, Ajax
請幫助我如何提交表單(評論)而無需刷新頁面
HTML標記:
<form id="commentf" method="post">
<img width="40px" height="40px" src="uploads/<?php echo $row['photo']; ?>">
<textarea class="textinput"id="comment" rows="1" name="comments" placeholder="Comment Here......"></textarea>
<button type="submit" id="comq"name="compost" class="butn2">post comment</button>
</form>
PHP代碼( pnf.php
):
if(isset($_POST["compost"]))
{
$comment=$_POST['comments'];
{
$reslt_user= mysqli_query($connection,"SELECT * FROM tbl_users,`queries` where id='".$_SESSION['id']."' AND qid= '".$qid."' ");
$row_lat_lng= mysqli_fetch_array($reslt_user);
$stmt = mysqli_query($connection,"INSERT INTO comments set uid='".$_SESSION['id']."',comments='".$comment."',reply='".$reply."' ,
qid= '".$qid."' ");
}
if($stmt)
{
echo "hello world";
}
}
jQuery和Ajax:
$(document).ready(function()
{
$("#comq").click(function() {
var comment=$("#comment").val();
$.ajax({
type: "POST",
url:"pnf.php",
data: {
"done":1,
"comments":comment
},
success: function(data){
}
})
});
});
我已經嘗試了很多次,不知道自己犯了什么錯誤,Ajax和jQuery無法正常工作,請任何人幫助-預先感謝
您犯了幾個錯誤。
首先 ::您應該在HTML表單代碼中添加 button type="button"
Second ::您犯了語法錯誤。 $("#comment").vol();
應該替換為$("#comment").val();
在您的jQuery AJAX中
正如您提到的那樣,您必須在不刷新頁面的情況下發送請求,因此我修改了JS代碼,以防止使用默認的提交表單:
$(document).ready(function () {
$("#commentf").submit(function (e) {
e.preventDefault();
var comment = $("#comment").val();
$.ajax({
type: "POST",
url: "pnf.php",
data: {
"done": 1,
"comments": comment
},
success: function (data) {
}
})
});
});
修改后的JQuery代碼...
$( document ).ready(function() {
console.log( "ready!" );
$("#comq").click(function() {
var comment=$("#comment").val();
console.log('comment : '+comment);
$.ajax({
type: "POST",
url:"pnf.php",
data: {
"done":1,
"comments":comment
},
success: function(data){
}
})
});
});
HTML代碼
<form id="commentf" method="post">
<textarea class="textinput" id="comment" rows="1" name="comments" placeholder="Comment Here......"></textarea>
<input type="button" id="comq" name="compost" class="butn2" value="Post Comment">
</form> </div>
Java腳本
$('form').on('submit', function(event){
event.preventDefault();
event.stopPropagination();
var dataSet = {
comment: $('#comment').val();
}
$.ajax({
url: "link.to.your.api/action=compost",
data: dataSet,
method: 'post',
success: function(data){
console.log('request in success');
console.log(data);
},
error: function(jqXHR) {
console.error('request in error');
console.log(jqXHR.responseText');
}
});
});
的PHP
$action = filter_input(INPUT_GET, 'action');
swicht($action){
case 'compost':
$comment = filter_input(INPUT_POST, 'comment');
{
$reslt_user= mysqli_query($connection,"SELECT * FROM tbl_users,`queries` where id='".$_SESSION['id']."' AND qid= '".$qid."' ");
$row_lat_lng= mysqli_fetch_array($reslt_user);
$stmt = mysqli_query($connection,"INSERT INTO comments set uid='".$_SESSION['id']."',comments='".$comment."',reply='".$reply."' ,
qid= '".$qid."' ");
}
if(!$stmt)
{
http_response_code(400);
echo 'internal error';
}
echo 'your data will be saved';
break;
default:
http_response_code(404);
echo 'unknown action';
}
您必須阻止表單上的提交(使用javascript)。
之后,您將請求發送到服務器,然后等待成功或錯誤。
在PHP中嘗試用開關盒來做到這一點。 並嘗試不直接觸摸超級全局變量,請使用filter_input函數。
希望這可以幫助
<form id="commentf" method="post">
<img width="40px" height="40px" src="uploads/<?php echo $row['photo']; ?>">
<textarea class="textinput"id="comment" rows="1" name="comments" placeholder="Comment Here......"></textarea>
<button type="button" id="comq"name="compost" class="butn2">post comment</button>
</form>
腳本
$(document).ready(function()
{
$("#comq").click(function() {
var comment=$("#comment").val();
$.ajax({
type: "POST",
url:"pnf.php",
data: {
"done":1,
"comments":comment
},
success: function(data){
}
})
});
});
PHP代碼(pnf.php):
comment=$_POST['comments'];
$reslt_user= mysqli_query($connection,"SELECT * FROM tbl_users,`queries` where id='".$_SESSION['id']."' AND qid= '".$qid."' ");
$row_lat_lng= mysqli_fetch_array($reslt_user);
$stmt = mysqli_query($connection,"INSERT INTO comments set uid='".$_SESSION['id']."',comments='".$comment."',reply='".$reply."' ,
qid= '".$qid."' ");
if($stmt)
{
echo "hello world";
}
如果使用的是jquery,請確保在腳本文件之前包含jquery庫。
最新的jquery cdn縮小版本
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.0/jquery.min.js"></script>
例
<script src="https://code.jquery.com/jquery-3.2.1.min.js" type="text/javascript"></script>
<script src="yourjsfile.js" type="text/javascript"></script>
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.