课程登记动态字段组
在课程登记场景中完成动态字段组：包含真实内容、可操作控件、清晰状态反馈和跨尺寸布局。
启用 JavaScript 后可编辑、运行和保存此案例。固定源码如下：
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<title>课程登记动态字段组</title>
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<header class="mast"><div><span class="eyebrow">minimal / 动态字段组 / BEGINNER</span><h1>课程登记动态字段组</h1><p class="intro">在课程登记场景中完成动态字段组：包含真实内容、可操作控件、清晰状态反馈和跨尺寸布局。</p></div><span class="scenario">课程登记</span></header>
<figure class="composition-gallery"><section class="demo" aria-label="课程登记动态字段组交互区域"><div class="workflow-session"><header class="session-command"><div><span class="eyebrow">课程登记 SESSION</span><h2>选课计划计时台</h2></div><output id="workflowSessionClock">00:45</output><label>回合时长<input id="workflowSessionLength" type="range" min="15" max="90" step="15" value="45"><span>秒</span></label><button id="workflowSessionToggle" class="action primary" type="button">开始提交选课</button></header><div id="workflowSessionProgress" role="progressbar" aria-label="选课计划进度" aria-valuemin="0" aria-valuemax="100" aria-valuenow="0"><i></i></div><section id="workflowCore" class="workflow-core session-stage" data-session-phase="ready" tabindex="-1"><!-- 11DZ_CORE_START:forms-input-repeatable-fields --><form id="repeatableForm" class="repeatable-form panel"><header><span class="eyebrow">REPEATABLE FIELDS</span><h2>课程登记成员清单</h2></header><div id="repeatableRows" class="repeatable-rows"></div><button id="addRepeatableRow" class="action" type="button" data-core-bridge="forms-input-repeatable-fields">添加成员</button><button class="action primary" type="submit">保存清单</button></form><!-- 11DZ_CORE_END --></section><footer class="session-log"><strong id="workflowSessionScore">0 个交互检查点</strong><ol id="workflowSessionLaps" aria-label="回合记录"></ol></footer></div><p id="status" class="status" role="status" aria-live="polite"></p></section><figcaption class="gallery-caption"><strong>课程登记 / GALLERY 03</strong></figcaption></figure>
</main>
<script>
'use strict';
const statusOutput = document.querySelector('#status');
const announce = message => { statusOutput.textContent = message; };
/* 11DZ_CORE_SCRIPT_START:forms-input-repeatable-fields */
const repeatableRows=document.querySelector('#repeatableRows');let repeatableIndex=0;function addRepeatableRow(shouldFocus=true){repeatableIndex+=1;const row=document.createElement('div');row.className='repeatable-row';row.innerHTML='<input name="memberName'+repeatableIndex+'" aria-label="成员 '+repeatableIndex+' 姓名" placeholder="姓名" required><input name="memberEmail'+repeatableIndex+'" aria-label="成员 '+repeatableIndex+' 邮箱" type="email" placeholder="邮箱" required><button type="button" aria-label="移除成员 '+repeatableIndex+'">×</button>';row.querySelector('button').addEventListener('click',()=>{row.remove();announce('成员字段已移除');});repeatableRows.append(row);if(shouldFocus)row.querySelector('input').focus();announce('已添加第 '+repeatableRows.children.length+' 位成员');}document.querySelector('#addRepeatableRow').addEventListener('click',()=>addRepeatableRow(true));document.querySelector('#repeatableForm').addEventListener('submit',event=>{event.preventDefault();if(!event.currentTarget.reportValidity())return;announce('已保存 '+repeatableRows.children.length+' 位成员');});addRepeatableRow(false);
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workflowBridgeReset();
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