react_tutorial/01_react_basic/codes/07_vanilla_js_render.html at main · linlinw5/react_tutorial · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>

    <button onclick="step1()">原生JS步骤1：初始渲染</button>
    <button onclick="step2()">原生JS步骤2：添加item 3</button>
    <button onclick="step3()">原生JS步骤3：添加item 4</button>

    <div id="root"></div>

    <script>

        function renderList(items) {
            const root = document.getElementById('root');

            root.innerHTML = '';
            const ul = document.createElement('ul');

            items.forEach(text => {
                const li = document.createElement('li');
                li.textContent = text;
                ul.appendChild(li);
            });
            root.appendChild(ul);
        }

        function step1() {
            renderList(['item 1', 'item 2']);
        }
        function step2() {
            renderList(['item 1', 'item 2', 'item 3']);
        }
        function step3() {
            renderList(['item 1', 'item 2', 'item 3', 'item 4']);
        }
    </script>

</body>
</html>