85 lines
3.4 KiB
HTML
85 lines
3.4 KiB
HTML
<!DOCTYPE html>
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<html lang="zh-CN">
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<head>
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<meta charset="UTF-8" />
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<meta name="viewport" content="width=device-width, initial-scale=1.0" />
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<title>Aurora Admin · DragUpload</title>
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<link rel="stylesheet" href="../.design_library/aurora-admin/colors_and_type.css" />
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<link rel="stylesheet" href="./DragUpload.css" />
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</head>
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<body>
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<div class="aa-page">
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<h2 class="aa-h2">DragUpload 拖拽上传</h2>
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<p class="aa-desc">支持点击或拖拽文件上传，显示进度与缩略图，可删除。</p>
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<div class="aa-demo">
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<div class="aa-upload" id="upload">
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<div class="aa-upload-drop" id="drop">
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<span class="aa-upload-icon">⬆️</span>
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<div class="aa-upload-hint">将文件拖到此处，或 <b>点击选择</b></div>
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</div>
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<input type="file" id="file" multiple style="display:none" />
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<div class="aa-upload-list" id="list"></div>
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</div>
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</div>
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</div>
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<script>
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var drop = document.getElementById('drop');
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var input = document.getElementById('file');
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var list = document.getElementById('list');
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var files = [];
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drop.addEventListener('click', function () { input.click(); });
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input.addEventListener('change', function () { addFiles(input.files); input.value = ''; });
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['dragenter', 'dragover'].forEach(function (ev) {
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drop.addEventListener(ev, function (e) { e.preventDefault(); drop.classList.add('is-over'); });
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});
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['dragleave', 'drop'].forEach(function (ev) {
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drop.addEventListener(ev, function (e) { e.preventDefault(); drop.classList.remove('is-over'); });
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});
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drop.addEventListener('drop', function (e) { addFiles(e.dataTransfer.files); });
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function addFiles(flist) {
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Array.prototype.forEach.call(flist, function (f) {
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var id = 'f' + Date.now() + Math.random().toString(36).slice(2, 6);
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var item = { id: id, name: f.name, progress: 0, done: false, thumb: '' };
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if (/^image\//.test(f.type) && f.size < 2 * 1024 * 1024) {
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var reader = new FileReader();
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reader.onload = function (e) { item.thumb = e.target.result; render(); };
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reader.readAsDataURL(f);
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}
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files.push(item);
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render();
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simulate(item);
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});
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}
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function simulate(item) {
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var timer = setInterval(function () {
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item.progress = Math.min(100, item.progress + Math.random() * 22);
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if (item.progress >= 100) { item.progress = 100; item.done = true; clearInterval(timer); }
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render();
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}, 220);
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}
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function render() {
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list.innerHTML = files.map(function (it) {
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var thumb = it.thumb ? '<img src="' + it.thumb + '">' : '文件';
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return '<div class="aa-upload-item">' +
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'<div class="aa-upload-thumb">' + thumb + '</div>' +
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'<div class="aa-upload-meta">' +
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'<div class="aa-upload-name">' + it.name + '</div>' +
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'<div class="aa-upload-bar"><i style="width:' + it.progress + '%"></i></div>' +
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'</div>' +
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'<div class="aa-upload-status">' + (it.done ? '已完成' : Math.round(it.progress) + '%') + '</div>' +
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'<button class="aa-upload-del" data-id="' + it.id + '">×</button>' +
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'</div>';
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}).join('');
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}
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list.addEventListener('click', function (e) {
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var del = e.target.closest('[data-id]');
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if (del) { files = files.filter(function (x) { return x.id !== del.dataset.id; }); render(); }
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});
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</script>
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</body>
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</html>
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