原生xhr ajax上传二进制文件到php保存文件笔记

传统的Content-Type: multipart/form-data; 来上传代码
Content-Type: multipart/form-data; boundary=----WebKitFormBoundarywAAQmLzVPYvLSMkl
html代码
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>XHR 上传文件示例</title>
</head>
<body>
<input type="file" id="fileInput">
<button id="uploadButton">上传</button>
<script>
const fileInput = document.getElementById('fileInput');
const uploadButton = document.getElementById('uploadButton');
uploadButton.addEventListener('click', () => {
const file = fileInput.files[0];
// 创建 FormData 对象
const formData = new FormData();
formData.append('upload_file', file);
// AJAX 发送
const xhr = new XMLHttpRequest();
xhr.open('POST', '/upload.php');
xhr.send(formData);
});
</script>
</body>
</html>点击查看剩余70%
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