Question

我已将导航放在我的手风琴按钮/标签中，因为我希望用户只需单击选项卡，即可随时查看导航。地图和所有与地图有关的代码都是完全正常的，因为我在控制台上测试时没有出现任何错误但由于某种原因它仍然无法显示。我也使用了API密钥。它只会在我用控制台测试时才能工作。单击选项卡时为什么不显示地图？

这是我的地图代码

   <!doctype html>
<html>
<head>
    <meta http-equiv="content-type" content="text/html; charset=utf-8"/>
    <meta charset = "utf-8">
    <title>London Tour Guide</title>
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.6.3/css/font-awesome.min.css">

    <script src="jquery.js"></script>

    <style>
        div.container { position: absolute; top: 10px; left: 400px; width: 720px; height: 1300px;
            background-color: white; }

        div.content {
            width: 700px; height: 1200px;
            background-color: lightblue; padding: 5px; }

        h1.welcome {font-family: Verdana, sans-serif; color: orangered;
            text-align: center; text-shadow: 2px 2px Grey;
            transition: 4s;}

        h1.stpauls{font-family: Verdana, sans-serif; color: orangered;
            text-align: center;
        }

        h1.welcome:hover{transform: rotateX(360deg); color:yellow; }

        p.medium {
    font-size: 12pt;
    font-family: "Palatino Linotype", "Book Antiqua", Palatino, serif;
    color: #333;
        }

        p.small {
    font-size: 12pt;
    font-family: "Palatino Linotype", "Book Antiqua", Palatino, serif;
    color: #333;
        }

        img {
            display: block;
            margin: auto;
        }



        ul {
            list-style-type: none;
            margin: 0;
            padding: 0;
            overflow: hidden;
            background-color: #333;
        }

        li {
            float: left;
        }

        li a, .dropbtn {
            display: inline-block;
            color: white;
            text-align: center;
            padding: 14px 16px;
            text-decoration: none;
        }

        li a:hover, .dropdown:hover .dropbtn {
            background-color: red;
        }

        li.dropdown {
            display: inline-block;

        }

        .dropdown-content {
            display: none;
            position: absolute;
            background-color: #f9f9f9;
            min-width: 160px;
            box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
        }

        .dropdown-content a {
            color: black;
            padding: 12px 16px;
            text-decoration: none;
            display: block;
            text-align: left;

        }

        .dropdown-content a:hover {background-color: #f1f1f1}

        .dropdown:hover .dropdown-content {
            display: block;
        }


        .dropbtn1 {
            background-color: #4CAF50;
            color: white;
            padding: 16px;
            font-size: 16px;
            border: none;
            cursor: pointer;
        }


        .dropbtn1:hover, .dropbtn1:focus {
            background-color: #3e8e41;
        }


        .dropdown1 {
            position: relative;
            display: inline-block;
        }


        .dropdown1-content {
            display: none;
            position: absolute;
            background-color: #f9f9f9;
            min-width: 160px;
            box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
        }


        .dropdown1-content a {
            color: black;
            padding: 12px 16px;
            text-decoration: none;
            display: block;
        }


        .dropdown1-content a:hover {background-color: #f1f1f1}

        .show{display:block;}

        button.accordion {
            background-color: #eee;
            color: #444;
            cursor: pointer;
            padding: 18px;
            width: 100%;
            border: none;
            text-align: left;
            outline: none;
            font-size: 15px;
            transition: 0.4s;
        }

        button.accordion.active, button.accordion:hover {
            background-color: #ddd;
        }

        div.panel {
            padding: 0 18px;
            display: none;
            background-color: white;
        }

        div.panel.show {
            display: block;
        }




    </style>
</head>
<body>

<div class="container">
<div class = "content">

    <div class = "header">
        <img src = "headerlondon.jpg" alt = "header"></div>

    <ul>
        <li><a class="active" href="Project.html">Home</a></li>
        <li><a href="Map.html">Maps </a></li>
        <li class="dropdown">
            <a href="#" class="travel">Travel <i class="fa fa-caret-down"></i></a>
            <div class="dropdown-content">
                <a href="Bus.html">Bus</a>
                <a href="Taxi.html">Taxi</a>
                <a href="Tube.html">Tube</a>
            </div>
        </li>
        <li class="dropdown">
            <a href="#" class="sightseeing">SightSeeing <i class="fa fa-caret-down"></i></a>
            <div class="dropdown-content">
                <a href="LondonEye.html">London Eye</a>
                <a href="TowerofLondon.html">Tower of London</a>
                <a href="BigBen.html">Big Ben</a>
                <a href="StPaulsCathedral.html">St Pauls Cathedral</a>
                <a href="BuckinghamPalace.html">Buckingham Palace</a>
                <a href="WestMinister.html">WestMinister</a>
            </div>
        </li>
        <li class="dropdown">
            <a href="#" class="Museums">Museums <i class="fa fa-caret-down"></i></a>
            <div class="dropdown-content">
                <a href="BritishMuseum.html">British Museum</a>
                <a href="ScienceMuseum.html">Science Museum</a>
                <a href="NationalHistoryMuseum.html">National History Museumm</a>

            </div>

        </li>
    </ul>

    <button class="accordion">Navigation</button>
    <div class="panel" style = "position: relative">
    <div id="map" style="width:50%;height:250px"></div>
        </div>



</div>

    <script>
        var acc = document.getElementsByClassName("accordion");
        var i;

        for (i = 0; i < acc.length; i++) {
            acc[i].onclick = function(){
                this.classList.toggle("active");
                this.nextElementSibling.classList.toggle("show");
            }
        }
    </script>

<script>
    function myMap() {
        var mapCanvas = document.getElementById("map");
        var myCenter = new google.maps.LatLng(51.508742,-0.120850);
        var mapOptions = {center: myCenter, zoom: 10};
        var map = new google.maps.Map(mapCanvas,mapOptions);
        var marker = new google.maps.Marker({
            position: myCenter,
            icon: "poi.png"
        });
        marker.setMap(map);
    }
</script>
<script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyB37us778WYnwNjHftUm3oL2oduV_WOt_E&callback=myMap"></script>




</div>
</body>
</html>

Answer 1

通常地图要求其容器位于：relative

你可以尝试添加位置：相对于面板类？

如果这不起作用，请确保您的Google地图应用密钥已从YOURKEY设置为您的密钥。

<script src="https://maps.googleapis.com/maps/api/js?key=**YOURKEY**&callback=myMap"></script>

Answer 2

映射要求容器具有特定大小并在加载时可见。它需要知道它应该适合的大小

为什么我的地图不会在Accordion标签中显示？

2 个答案: