[英]Preventing page refresh after form submission (e.preventDefault();) doesn't work
我想在用户提交表单后停止页面刷新。 问题是它似乎不起作用。 PHP:
<?php
function displayimage() {
$con = mysqli_connect("localhost", "root", "", "cookbook");
$result = mysqli_query($con, "SELECT * FROM product");
while ($row = mysqli_fetch_array($result)) {
echo "<img src='uploads/".$row['image']."' class='imageaaa'>";
}
mysqli_close($con);
}
function addrecipe() {
$con = mysqli_connect("localhost", "root", "", "cookbook");
if (isset($_POST["Add"])) {
if (!empty($_POST["Name"])
){
$name = $_POST["Name"];
$type = $_POST["Type"];
$image = $_FILES['Image']['name'];
$date = date("d.m.Y, G:i");
$sql = "
INSERT INTO
product(`name`, `type`, `image`, `date`)
VALUES('$name', '$type', '$image', '$date');
// More Insert Into queries
";
$target = "uploads/".basename($image);
if (move_uploaded_file($_FILES['Image']['tmp_name'], $target)) {
$msg = "Image uploaded successfully";
} else {
$msg = "Failed to upload image";
}
$var = mysqli_multi_query($con,$sql);
if($var){
echo "good";
} else {
echo "bad";
}
} else {
echo "Fill in the form";
}
}
mysqli_close($con);
}
?>
HTML:
<?php
addrecipe();
displayimage();
?>
<form method="POST" id="form" enctype='multipart/form-data'>
Name:
<input type="text" name="Name" value="<?php echo isset($_POST['Name'])?htmlspecialchars($_POST['Name'], ENT_QUOTES):'';?>"><br>
Type:
<select name="Type" required>
<option value="dishes" disabled selected hidden required>Wybierz typ</option>
<option value="dishes">Dania</option>
<option value="desserts">Desery</option>
<option value="snacks">Przekąski</option>
</select><be>
Image (jpg, png):
<input type="button" id="loadFileXml" value="loadXml" onclick="document.getElementById('upload_image').click();" />
<input type="file" style="display:none;" id="upload_image" name="Image">
<br><be>
<!-- More text inputs -->
<button name="Add" id="add">sdfsdfsd</button>
<script>
$("#add").submit(function(e) {
e.preventDefault();
});
</script>
</form>
我已经尝试了一些东西,但似乎没有任何效果。 一切正常,数据已发送到数据库,但我无法摆脱此页面重新加载。 我做错什么了吗? 如果有更好的解决方案,我很想知道。 另外,我有这个js代码:
<script>
if (window.history.replaceState){
window.history.replaceState(null, null, window.location.href);
}
</script>
在我的 HTML 标记之后,删除它不会改变任何内容。 它会在您刷新页面之前禁用重新提交表单弹出窗口。 有什么办法可以在表单提交后禁用页面刷新?
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