ajax拖拽上传文件

AJAX拖拽上传

<!DOCTYPE html>
<html lang="en"> <head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<style>
.box {
width: 300px;
height: 300px;
border: 1px solid #000;
text-align: center;
line-height: 300px;
font-size: 40px;
}
</style>
</head> <body>
<div class="box">+</div> <script>
var box = document.querySelector('.box'); box.ondragover = function (e) {
e.preventDefault();
}
box.ondrop = function (e) {
console.log(e.dataTransfer)
e.preventDefault();
var xhr = new XMLHttpRequest();
xhr.onreadystatechange = function () {
if (xhr.readyState == 4 && xhr.status == 200) {
console.log(xhr.responseText)
}
}
xhr.open('POST', './server.php', true); var formdata = new FormData();
formdata.append('pic', e.dataTransfer.files[0]);
formdata.append('name', 'luyao');
xhr.send(formdata); }
</script>
</body> </html>
//server.php

<?php
$rand = rand(1,1000).'.jpg';
move_uploaded_file($_FILES['pic']['tmp_name'], './uploads/'.$rand);
echo '/uploads/'.$rand;
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