I need to prevent the page redirected to the upload php when click upload button.
How can I do this in below code.
<form id="myForm" action="http://example/DB_1/AccessWeb/file_upload.php" method="post" enctype="multipart/form-data">
Select image to upload:
<input type="file" name="fileToUpload" id="fileToUpload1">
</form>
<button onclick="myFunction()"> Upload
</button>
<script>
function myFunction(){
document.getElementById("myForm").submit();
}
</script>
分享 A very basic, quickly written example of how to send a file - using ajax to the same page so that the user doesn't get redirected. This is plain vanilla javascript rather than jQuery.
The callback function can do more than print the response - it could, for instance, be used to update the DOM with new content based upon the success/failure of the upload.
<?php
$field='fileToUpload';
if( $_SERVER['REQUEST_METHOD']=='POST' && !empty( $_FILES ) ){
$obj=(object)$_FILES[ $field ];
$name=$obj->name;
$tmp=$obj->tmp_name;
$size=$obj->size;
$error=$obj->error;
$type=$obj->type;
if( $error==UPLOAD_ERR_OK ){
/*
This is where you would process the uploaded file
with various tests to ensure the file is OK before
saving to disk.
What you send back to the user is up to you - it could
be json,text,html etc etc but here the ajax callback
function simply receives the name of the file chosen.
*/
echo $name;
} else {
echo "bad foo!";
}
exit();
}
?>
<!doctype html>
<html>
<head>
<title>File Upload - using ajax</title>
<script>
document.addEventListener('DOMContentLoaded',function(e){
var bttn=document.getElementById('bttn');
bttn.onclick=function(e){
/* Assign a new FormData object using the buttons parent ( the form ) as the argument */
var data=new FormData( e.target.parentNode );
var xhr=new XMLHttpRequest();
xhr.onload=function(e){
document.getElementById('status').innerHTML=this.response;
}
xhr.onerror=function(e){
alert(e);
}
xhr.open('POST',location.href,true);
xhr.send(data);
};
},false);
</script>
</head>
<body>
<form method='post' enctype='multipart/form-data'>
Select image to upload:
<input type='file' name='fileToUpload'>
<input type='button' id='bttn' value='Upload' />
</form><div id='status'></div>
</body>
</html>
