js上传base64
<!DOCTYPE html>
<html>
<head>
<title>Upload Image</title>
</head>
<body>
<input type="file" id="fileInput">
<button onclick="uploadImage()">Upload Image</button>
<script>
function uploadImage() {
const fileInput = document.getElementById('fileInput');
const file = fileInput.files[0];
const reader = new FileReader();
reader.onload = function(event) {
const base64Data = event.target.result;
// 发送 Base64 数据到后端
const xhr = new XMLHttpRequest();
xhr.open('POST', 'http://your-backend-url/upload', true);
xhr.setRequestHeader('Content-Type', 'application/json');
xhr.send(JSON.stringify({ image: base64Data }));
};
reader.readAsDataURL(file);
}
</script>
</body>
</html>
