动态框案例

动态框案例

1.案例图

2.搭建登入页面

/html
 <header>
            <h2 class="title">夏天的个人博客</h2>
            <button  onclick="showModal()">登入</button>
 </header>
 /css
 *{
    padding: 0px;
    margin: 0px;
    box-sizing: border-box;
}
header {
    background-color: lightblue;
    display: flex;
    padding: 0.5em 1em;
}
h2.title {
    font-weight: lighter;
    font-style: italic;
    color: #f66;
    letter-spacing: 2px;
    text-shadow: 1px 1px 1px  #555;
}
header button {
    margin-left: auto;
    width: 5em;
    border: none;
    border-radius: 0.5em;
}
header button:hover {
    cursor: pointer;
    background-color: coral;
    color: white;
    box-shadow: 0 0 5px #fff;
    transition: 0.5s;
}

3.搭建我们动态框页面

/html
 <div class="modal">
                <div class="modal-bg" onclick="closeModal()"></div>
                <form action="" class="modal-form">
                    <fieldset style="display: grid; gap: 1em;">
                        <legend>用户登入</legend>
                        <input type="email" name="email" placeholder="user@email.com">
                        <input type="password" name="password" placeholder="不少于8位数">
                        <button>登入</button>
                    </fieldset>
                </form>
  </div>
/css
.modal .modal-form fieldset {
    height: 15.5em;
    background-color: lightcyan;
    border: none;
    padding: 2em 3em;
    box-shadow: 0 0 5px #888;
}
.modal .modal-form fieldset legend {
    padding: 7px 1.5em;
    color: white;
    background-color: lawngreen;
}
.modal .modal-form fieldset input {
    height: 3em;
    padding-left: 1em;
    outline: none;
    border: 1px solid #ddd;
    font-size: 14px;
}
.modal .modal-form fieldset input:focus {
    box-shadow: 0 0 8px #888;
    border: none;
}
.modal .modal-form fieldset button {
    background-color: lightgreen;
    color: white;
    height: 2.5em;
    font-size: 16px;
    border: none;
}
.modal .modal-form fieldset button:hover {
    background-color: coral;
    cursor: pointer;
}
.modal .modal-form {
    position: fixed;
    top: 10em;
    left: 38em;
    right: 38em;
}
.modal .modal-bg {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0,0,0,0.5);
}
.modal {
    display: none;
}

4.通过js实现动态框页面

function showModal() {
    // 获取模态框元素
    const modal = document.querySelector('.modal');
    // 显示模态框
    modal.style.display = 'block';
    // 焦点自动置入第一个输入框email
    modal.querySelector('input:first-of-type').focus();
}
function closeModal() {
    // 获取模态框元素
    const modal = document.querySelector('.modal');
    // 关闭模态框
    modal.style.display = 'none';
}