提交表单代码:
<form action="#" method="POST" enctype="multipart/form-data" id="upload-form"> <label for="file">选择一个图像文件:</label> <input type="file" id="file" name="file" accept="image/*"><br> <input type="submit" value="上传"> <div class="status" id="status"></div> </form>
JavaScript提交代码:
<script> const form = document.getElementById('upload-form'); const status = document.getElementById('status'); form.addEventListener('submit', event => { event.preventDefault(); status.style.display = 'none'; const fileInput = document.getElementById('file'); const file = fileInput.files[0]; if (!file) { showError('Please choose a file to upload.'); return; } const formData = new FormData(); formData.append('file', file); const xhr = new XMLHttpRequest(); xhr.onreadystatechange = function() { if (this.readyState === XMLHttpRequest.DONE && this.status === 200) { try { const responseJson = JSON.parse(xhr.responseText); const url = responseJson.url; if (url) { showSuccess(`图片网址 ${url}`); } else { showError('Failed to upload the image.'); } } catch (error) { showError('Failed to parse the response from the server.'); } } else if (this.readyState === XMLHttpRequest.DONE) { showError(`Server returned status code ${xhr.status}.`); } }; xhr.open('POST', 'https://api.suyanw.cn/huluxia/upload.php'); xhr.send(formData); function showSuccess(message) { status.textContent = message; status.classList.remove('error'); status.classList.add('success'); status.style.display = 'block'; } function showError(message) { status.textContent = message; status.classList.remove('success'); status.classList.add('error'); status.style.display = 'block'; } }); </script>
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