借助HTMXJS及其伴侣_hyperscriptJS的强大和优雅,只需几行代码即可编写选择、上传 (POST) 多个文件并显示进度条并显示它们的代码:
<form hx-encoding="multipart/form-data"
_="on htmx:xhr:progress(loaded, total) set #bar.value to (loaded/total)*100">
<input type="file" name="fileToUpload[]" multiple
hx-post="upload.php"
hx-target="#image-src"
hx-swap="innerHTML">
<button type="button">Select</button>
<progress id="bar" value="0" max="100"></progress>
</form>
<div id="image-src"></div>
和upload.php:
$countfiles = count($_FILES['fileToUpload']['name']);
for($i=0;$i<$countfiles;$i++){
$filename = $_FILES['fileToUpload']['name'][$i];
move_uploaded_file($_FILES['fileToUpload']['tmp_name'][$i], $filename);
echo '
<div>
<img src="'.$filename.'">
</div>
';
}
但现在我想添加网络错误处理。我知道 HTMX 会触发
htmx:sendError,但我不明白如何将其添加到我上面的代码中,以便如果出现网络错误,它会弹出一个警报(或将错误交换/显示为 a <div>
)