请帮助我如何在没有页面刷新的情况下提交表单(评论)
HTML标记:
<form id="commentf" method="post">
<img width="40px" height="40px" src="uploads/<?php echo $row['photo']; ?>">
<textarea class="textinput"id="comment" rows="1" name="comments" placeholder="Comment Here......"></textarea>
<button type="submit" id="comq"name="compost" class="butn2">post comment</button>
</form>
PHP代码(pnf.php
):
if(isset($_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){
}
})
});
});
我已多次尝试过,并且不知道我犯了什么错误,Ajax和jQuery无法正常工作,请任何人帮忙 - 提前感谢
答案 0 :(得分:1)
你犯了几个错误。
首先 ::您应该将按钮 type="button"
放入 HTML表单代码中
第二 ::您的语法错误。 {<1}}应替换为 jQuery AJAX
$("#comment").vol();
答案 1 :(得分:0)
正如您所提到的,您必须在没有刷新页面的情况下发送请求我修改了您的JS代码并阻止了默认提交表单:
$(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) {
}
})
});
});
答案 2 :(得分:0)
修改了JQuery代码......
$( 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代码
<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>
答案 3 :(得分:0)
的Javascript
$('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');
}
});
});
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';
}
你必须阻止表单上的提交(查看javascript)。
之后,您将请求发送到服务器并等待成功或错误。
php中的尝试用switch case来做。并尝试不直接触摸超级全局,使用filter_input函数。
希望这会有所帮助
答案 4 :(得分:0)
<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>
脚本
$(document).ready(function()
{
$("#comq").click(function() {
var comment=$("#comment").val();
$.ajax({
type: "POST",
url:"pnf.php",
data: {
"done":1,
"comments":comment
},
success: function(data){
}
})
});
});
PHP代码(pnf.php):
comment=$_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";
}
答案 5 :(得分:0)
如果您使用的是jquery,请确保在脚本文件之前包含jquery库。
最新的jquery cdn缩小版
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.0/jquery.min.js"></script>
示例
<script src="https://code.jquery.com/jquery-3.2.1.min.js" type="text/javascript"></script>
<script src="yourjsfile.js" type="text/javascript"></script>