手寫一個新手引導效果

先看下效果html


分步思考🤔

  1. 須要一個高亮的元素
  2. 來個遮罩層
  3. 高亮的上來下
  4. 有意見,把肚子裏的吐🤮出來

代碼奉上

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
        /* 高亮元素盒子 */
        .list-box {
            margin-top: 60px;
        }

        /* 高亮元素樣式 */
        .list-box-item {
            list-style: none;
            background: paleturquoise;
            float: left;
            margin: 2px;
            padding: 5px;
        }

        /* 遮罩層 */
        .mark {
            position: fixed;
            top: 0;
            right: 0;
            bottom: 0;
            left: 0;
            overflow: hidden;
            outline: 0;
            -webkit-overflow-scrolling: touch;
            background-color: rgb(0, 0, 0);
            filter: alpha(opacity=60);
            background-color: rgba(0, 0, 0, 0.3);
            z-index: 521;
        }

        /* 高亮區域 */
        .content {
            z-index: 1314;
            border: 1px dashed #fff;
            position: absolute;
        }

        /* 有意見,把肚子裏的吐🤮出來 */
        .tooltip-box {
            width: 150px;
            height: 26px;
            line-height: 26px;
            background: white;
            position: relative;
            -moz-border-radius: 40px;
            -webkit-border-radius: 40px;
            border-radius: 40px;
            padding: 5px 15px;
            font-size: 14px;
        }

        /*加個小尾巴*/
        .tooltip-box:before {
            content: "";
            position: absolute;
            right: 100%;
            top: -10px;
            left: 20%;
            width: 0;
            height: 0;
            border-left: 10px solid transparent;
            border-right: 10px solid transparent;
            border-bottom: 13px solid white;
        }
    </style>
</head>

<body>
    <div class="mark">
        <div class="content" id='js-mark-content-id'>
        </div>
        <div class='tooltip-box' id='js-tooltip-box-id'>
            我是新來的一個功能!!!!!
        </div>
    </div>
    </div>
    <div class="list-box">
        <div class="list-box-item">花自飄零水自流</div>
        <div class="list-box-item">一種相思</div>
        <div class="list-box-item" id='js-show-id'>兩處閒愁</div>
        <div class="list-box-item">此情無計可消除</div>
        <div class="list-box-item">才下眉頭</div>
        <div class="list-box-item">卻上心頭</div>
    </div>
</body>
<script>
    const show = document.getElementById('js-show-id')
    const showLeft = show.offsetLeft
    const showTop = show.offsetTop
    const showWidth = show.offsetWidth
    const showHeight = show.offsetHeight
    //設置一個框
    const contentMark = document.getElementById('js-mark-content-id')
    contentMark.style.left = showLeft - 3 + 'px'
    contentMark.style.top = showTop - 3 + 'px'
    const showClone = show.cloneNode(true)
    contentMark.appendChild(showClone)
    //設置一個提示語
    const tooltipBox = document.getElementById('js-tooltip-box-id')
    tooltipBox.style.left = showLeft + 'px'
    tooltipBox.style.top = showTop + showHeight + 15 + 'px'

</script>

</html>


複製代碼

推薦一個好用的組件Driver

github.com/kamranahmed…git

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