<style> | |
form{ | |
position:fixed; | |
top:50%; | |
left:45%; | |
width:1250px; | |
} | |
</style> | |
<form id="form" method="POST" action="/" enctype="multipart/form-data"> | |
{{ form.hidden_tag() }} | |
{{ form.file(size=20) }} | |
</form> | |
<script> | |
document.getElementById("file").onchange = function() { | |
document.getElementById("form").submit(); | |
}; | |
</script> | |