原生实现element动态添加tab

最新推荐文章于 2025-04-25 18:29:26 发布
原创最新推荐文章于 2025-04-25 18:29:26 发布
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原生html + js :
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Dynamic Tabs</title>
    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css" rel="stylesheet">
    <link href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.0.0/css/all.min.css" rel="stylesheet">
    <style>
        .tab-close {
            margin-left: 8px;
            cursor: pointer;
            padding: 2px 6px;
            border-radius: 50%;
        }
        .tab-close:hover {
            background-color: rgba(0,0,0,0.1);
        }
        .add-tab-button {
            cursor: pointer;
            padding: 8px 12px;
            border: none;
            background: none;
        }
        .nav-tabs .nav-item .nav-link {
            padding-right: 35px;
            position: relative;
        }
        .tab-close {
            position: absolute;
            right: 8px;
            top: 50%;
            transform: translateY(-50%);
        }
    </style>
</head>
<body>
    <div class="container mt-4">
        <div class="card">
            <div class="card-body">
                <div class="d-flex align-items-center">
                    <ul class="nav nav-tabs flex-grow-1" id="myTabs" role="tablist">
                    </ul>
                    <button class="add-tab-button" id="addTabBtn">
                        <i class="fas fa-plus"></i> Add Tab
                    </button>
                </div>
                <div class="tab-content mt-3" id="myTabContent">
                </div>
            </div>
        </div>
    </div>

    <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/js/bootstrap.bundle.min.js"></script>
    
    <script>
        class TabManager {
            constructor() {
                this.tabCounter = 0;
                this.tabs = new Map(); // 存储所有的tab引用
                this.init();
            }

            init() {
                // 初始化事件监听
                document.getElementById('addTabBtn').addEventListener('click', () => this.addNewTab());
                // 添加第一个tab
                this.addNewTab();
            }

            createTabId() {
                return `tab${++this.tabCounter}`;
            }

            createTabElement(tabId, isActive = false) {
                const li = document.createElement('li');
                li.className = 'nav-item';
                li.innerHTML = `
                    <a class="nav-link ${isActive ? 'active' : ''}" 
                       id="${tabId}-tab" 
                       data-bs-toggle="tab" 
                       href="#${tabId}-content" 
                       role="tab">
                        Tab ${this.tabCounter}
                        <span class="tab-close">
                            <i class="fas fa-times"></i>
                        </span>
                    </a>
                `;

                // 添加关闭按钮事件
                const closeBtn = li.querySelector('.tab-close');
                closeBtn.addEventListener('click', (e) => {
                    e.preventDefault();
                    e.stopPropagation();
                    this.removeTab(tabId);
                });

                return li;
            }

            createTabContent(tabId, isActive = false) {
                const div = document.createElement('div');
                div.className = `tab-pane fade ${isActive ? 'show active' : ''}`;
                div.id = `${tabId}-content`;
                div.innerHTML = `
                    <form class="mt-3">
                        <div class="mb-3">
                            <label for="${tabId}-product-id" class="form-label">Product ID</label>
                            <input type="text" class="form-control" id="${tabId}-product-id">
                        </div>
                        <div class="mb-3">
                            <label for="${tabId}-app-name" class="form-label">App Name</label>
                            <input type="text" class="form-control" id="${tabId}-app-name">
                        </div>
                    </form>
                `;
                return div;
            }

            addNewTab() {
                const tabId = this.createTabId();
                const isFirstTab = this.tabCounter === 1;
                
                const tabElement = this.createTabElement(tabId, isFirstTab);
                const tabContent = this.createTabContent(tabId, isFirstTab);

                document.getElementById('myTabs').appendChild(tabElement);
                document.getElementById('myTabContent').appendChild(tabContent);

                // 存储tab引用
                this.tabs.set(tabId, {
                    element: tabElement,
                    content: tabContent
                });

                // 如果是第一个标签，激活它
                if (isFirstTab) {
                    const tabInstance = new bootstrap.Tab(document.getElementById(`${tabId}-tab`));
                    tabInstance.show();
                }
            }

            removeTab(tabId) {
                const tab = this.tabs.get(tabId);
                if (!tab) return;

                const tabLink = document.getElementById(`${tabId}-tab`);
                const isActive = tabLink.classList.contains('active');

                // 如果删除的是活动的标签页，需要激活另一个标签页
                if (isActive) {
                    const remainingTabs = Array.from(this.tabs.keys())
                        .filter(id => id !== tabId);

                    if (remainingTabs.length > 0) {
                        const nextTabId = remainingTabs[0];
                        const nextTab = document.getElementById(`${nextTabId}-tab`);
                        const bsTab = new bootstrap.Tab(nextTab);
                        bsTab.show();
                    }
                }

                // 使用 requestAnimationFrame 确保在下一帧删除元素
                requestAnimationFrame(() => {
                    tab.element.remove();
                    tab.content.remove();
                    this.tabs.delete(tabId);
                });
            }
        }

        // 初始化
        document.addEventListener('DOMContentLoaded', () => {
            window.tabManager = new TabManager();
        });
    </script>
</body>
</html>