【JS】简易留言板

Osinghong3周前 (05-26)成果展示61

css样式请修改一下，别跟我一样

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>D24C04429</title>
    <style>
        body {
    border: 1px solid #000;
    margin: 30px;
    padding: 30px;
}
h1 {
    text-align: center;
    font-size: 48px;
    color: green;
    margin-bottom: 30px;
    font-weight: bold;
    letter-spacing: 5px;
}
textarea {
    display: block;
    width: 80%;
    height: 50px;
    margin: 0 auto 30px auto;
    border: 2px dashed green;
    box-sizing: border-box;
    font-size: 18px;
    padding: 10px;
    resize: none;
}
button.submit {
    display: block;
    width: 100px;
    height: 40px;
    margin: 0 auto 20px auto;
    background: #444;
    color: #fff;
    font-size: 22px;
    border: 1px solid #000;
    cursor: pointer;
    letter-spacing: 5px;
}
ul {
    width: 80%;
    margin: 0 auto;
    padding: 0;
    border: 2px dashed green;
    min-height: 200px;
    box-sizing: border-box;
    list-style: none;
}
ul li {
    margin: 10px 0;
    font-size: 18px;
}
    </style>
</head>
<body>
    <h1>留言板</h1>
    <ul></ul><br><br>
    <textarea placeholder="请输入内容"></textarea>
    <button class="submit">发布</button>
    <script>
        var btn = document.querySelector('.submit');
        var text = document.querySelector('textarea');
        var ul = document.querySelector('ul');

        btn.onclick = function() {
            if (text.value === '') {
                alert('请输入内容');
                return;
            }
            var li = document.createElement('li');
            li.innerText = text.value;
            var button = document.createElement('button');
            button.innerText = '删除';
            li.appendChild(button);
            ul.appendChild(li);
            button.onclick = function() {
                ul.removeChild(this.parentNode);
            }
            text.value = '';
        }

        console.log(ul.children[0]);
    </script>
</body>
</html>

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