2023年3月7日 20:20:22go评论52阅读模式

英文:

Adding Multiple HTML Markers to Google Maps API

问题

以下是您提供的代码部分的翻译：

function init() {

  // 左侧
  var locations = [
    ['500k', -33.890542, 151.274856, 1],
    ['1.3M', -33.923036, 151.259052, 2],
    ['2.3M', -34.028249, 151.157507, 3],
    ['750k', -33.800101, 151.287478, 4],
    ['200K', -33.950198, 151.259302, 5],
  ];

  var map = new google.maps.Map(document.getElementById('mapdiv'), {
    zoom: 10,
    center: new google.maps.LatLng(-33.92, 151.25),
    mapTypeId: google.maps.MapTypeId.ROADMAP,
  });

  var infowindow = new google.maps.InfoWindow();

  for (i = 0; i < locations.length; i++) {

    var price = locations[i][0];
    var latMarker = locations[i][1];
    var lngMarker = locations[i][2];

    function HTMLMarker(lat, lng) {
      this.lat = lat;
      this.lng = lng;
      this.pos = new google.maps.LatLng(lat, lng);
    }

    HTMLMarker.prototype = new google.maps.OverlayView();

    HTMLMarker.prototype.onRemove = function() {}

    // 初始化您的 HTML 元素
    HTMLMarker.prototype.onAdd = function() {
      div = document.createElement('div');
      div.className = "arrow_box d-flex";
      div.innerHTML = "<div class='m-auto'>SR " + price + "</div>";
      var panes = this.getPanes();
      panes.overlayImage.appendChild(div);
    }

    HTMLMarker.prototype.draw = function() {
      var overlayProjection = this.getProjection();
      var position = overlayProjection.fromLatLngToDivPixel(this.pos);
      var panes = this.getPanes();
      panes.overlayImage.style.left = position.x + 'px';
      panes.overlayImage.style.top = position.y - 30 + 'px';
    }

    // 使用它
    var htmlmarker = new HTMLMarker(latMarker, lngMarker);

    htmlmarker.setMap(map);

  }

}

html,
body {
  height: 100%;
  margin: 0;
  padding: 0;
}

#mapdiv {
  height: 100%;
  width: 100%;
}

#mapdiv2 {
  height: 100%;
  width: 100%;
}

div.arrow_box {
  font-size: 10px;
  width: 60px;
  height: 20px;
  background: blue;
  border-radius: 10px;
  margin: 10px -30px;
  color: white;
  cursor: pointer;
  overflow: hidden;
}

div.arrow_box img {
  min-width: 150px;
  width: auto;
  max-height: 100px;
  height: auto;
  border-radius: 5px;
}

.arrow_box:after {
  top: 30px;
  left: 0px;
  border: solid transparent;
  content: " ";
  height: 0;
  width: 0;
  position: absolute;
  pointer-events: none;
  border-color: rgba(136, 183, 213, 0);
  border-top-color: blue;
  border-width: 5px;
  margin-left: -5px;
}

<!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">

  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0-alpha1/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-GLhlTQ8iRABdZLl6O3oVMWSktQOp6b7In1Zl3/Jr59b6EGGoI1aFkw7cmDA6j6gD" crossorigin="anonymous">

  <title>地图测试</title>
</head>
<style>

</style>

<body class="bg-dark d-flex p-1" onload="init()">

  <div class="border border-primary bg-dark rounded" id="mapdiv">
  </div>

</body>
<script src="https://maps.googleapis.com/maps/api/js?v=3.exp&sensor=false"></script>

<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0-alpha1/dist/js/bootstrap.bundle.min.js" integrity="sha384-w76AqPfDkMBDXo30jS1Sgez6pr3x5MlQ1ZAGC+nuZB+EYdgRZgiwxhTBTkF7CXvN" crossorigin="anonymous">
</script>

<script src='https://ajax.googleapis.com/ajax/libs/jquery/3.6.0/jquery.min.js'></script>

</html>

请注意，上述代码的翻译只包括HTML、CSS和JavaScript的部分，不包括代码中的注释。

英文:

I've been trying to add multiple HTML markers on Google Maps so I can add CSS styles and also include text inside it and also animate the markers as you zoom in and out so I can make them smaller or bigger or turn them into a dot depending on the zoom level or add icons.

The style that I am trying to achieve is shown in this following example.

I've tried my best but the best I could muster up without critical errors is this following, for some reason they are stacking in one marker:

Here is the code I got.

function init() {
// LEFT
var locations = [
[&#39;500k&#39;, -33.890542, 151.274856, 1],
[&#39;1.3M&#39;, -33.923036, 151.259052, 2],
[&#39;2.3M&#39;, -34.028249, 151.157507, 3],
[&#39;750k&#39;, -33.800101, 151.287478, 4],
[&#39;200K&#39;, -33.950198, 151.259302, 5],
];
var map = new google.maps.Map(document.getElementById(&#39;mapdiv&#39;), {
zoom: 10,
center: new google.maps.LatLng(-33.92, 151.25),
mapTypeId: google.maps.MapTypeId.ROADMAP,
});
var infowindow = new google.maps.InfoWindow();
for (i = 0; i &lt; locations.length; i++) {
var price = locations[i][0];
var latMarker = locations[i][1];
var lngMarker = locations[i][2];
function HTMLMarker(lat, lng) {
this.lat = lat;
this.lng = lng;
this.pos = new google.maps.LatLng(lat, lng);
}
HTMLMarker.prototype = new google.maps.OverlayView();
HTMLMarker.prototype.onRemove = function() {}
//init your html element here
HTMLMarker.prototype.onAdd = function() {
div = document.createElement(&#39;div&#39;);
div.className = &quot;arrow_box d-flex&quot;;
div.innerHTML = &quot;&lt;div class=&#39;m-auto&#39;&gt;SR &quot; + price + &quot;&lt;/div&gt;&quot;;
var panes = this.getPanes();
panes.overlayImage.appendChild(div);
}
HTMLMarker.prototype.draw = function() {
var overlayProjection = this.getProjection();
var position = overlayProjection.fromLatLngToDivPixel(this.pos);
var panes = this.getPanes();
panes.overlayImage.style.left = position.x + &#39;px&#39;;
panes.overlayImage.style.top = position.y - 30 + &#39;px&#39;;
}
// to use it
var htmlmarker = new HTMLMarker(latMarker, lngMarker);
htmlmarker.setMap(map);
}
}

html,
body {
height: 100%;
margin: 0;
padding: 0;
}
#mapdiv {
height: 100%;
width: 100%;
}
#mapdiv2 {
height: 100%;
width: 100%;
}
div.arrow_box {
font-size: 10px;
width: 60px;
height: 20px;
background: blue;
border-radius: 10px;
margin: 10px -30px;
color: white;
cursor: pointer;
overflow: hidden;
}
div.arrow_box img {
min-width: 150px;
width: auto;
max-height: 100px;
height: auto;
border-radius: 5px;
}
.arrow_box:after {
top: 30px;
left: 0px;
border: solid transparent;
content: &quot; &quot;;
height: 0;
width: 0;
position: absolute;
pointer-events: none;
border-color: rgba(136, 183, 213, 0);
border-top-color: blue;
border-width: 5px;
margin-left: -5px;
}

&lt;!DOCTYPE html&gt;
&lt;html lang=&quot;en&quot;&gt;
&lt;head&gt;
&lt;meta charset=&quot;UTF-8&quot;&gt;
&lt;meta name=&quot;viewport&quot; content=&quot;width=device-width, initial-scale=1.0&quot;&gt;
&lt;meta http-equiv=&quot;X-UA-Compatible&quot; content=&quot;ie=edge&quot;&gt;
&lt;link href=&quot;https://cdn.jsdelivr.net/npm/bootstrap@5.3.0-alpha1/dist/css/bootstrap.min.css&quot; rel=&quot;stylesheet&quot; integrity=&quot;sha384-GLhlTQ8iRABdZLl6O3oVMWSktQOp6b7In1Zl3/Jr59b6EGGoI1aFkw7cmDA6j6gD&quot; crossorigin=&quot;anonymous&quot;&gt;
&lt;title&gt;Map Test&lt;/title&gt;
&lt;/head&gt;
&lt;style&gt;
&lt;/style&gt;
&lt;body class=&quot;bg-dark d-flex p-1&quot; onload=&quot;init()&quot;&gt;
&lt;div class=&quot;border border-primary bg-dark rounded&quot; id=&quot;mapdiv&quot;&gt;
&lt;/div&gt;
&lt;/body&gt;
&lt;script src=&quot;https://maps.googleapis.com/maps/api/js?v=3.exp&amp;sensor=false&quot;&gt;&lt;/script&gt;
&lt;script src=&quot;https://cdn.jsdelivr.net/npm/bootstrap@5.3.0-alpha1/dist/js/bootstrap.bundle.min.js&quot; integrity=&quot;sha384-w76AqPfDkMBDXo30jS1Sgez6pr3x5MlQ1ZAGC+nuZB+EYdgRZgiwxhTBTkF7CXvN&quot; crossorigin=&quot;anonymous&quot;&gt;
&lt;/script&gt;
&lt;script src=&#39;https://ajax.googleapis.com/ajax/libs/jquery/3.6.0/jquery.min.js&#39;&gt;&lt;/script&gt;
&lt;/html&gt;

答案1

得分: 2

以下是您的代码中提到的问题的翻译：

无需在for循环内声明HTMLMarker函数。将其声明在循环外部，然后在循环内调用new HTMLMarker(...)和setMap()函数。
我已经在create函数中添加了价格，因此您可以将其作为this.price引用，并在onAdd函数中使用它。
同样适用于您正在创建的div。使用this.div = document.createElement('div');，以便您可以在其他函数中引用它。
我使用了overlayMouseTarget，这似乎比overlayImage更适合保存HTML标记。
在draw()函数中，设置this.div的位置，而不是设置整个地图窗格的位置。
最后但并非最不重要的，您的.arrow_box元素需要position: absolute;。

还有一些事情：

将<script>标签包含在<body>元素内
在API调用&callback=init中将您的地图初始化函数init()声明为回调，并使用defer属性确保回调在浏览器完全解析DOM后执行
将init()函数声明为window对象的属性
我修复了您的CSS，如果在框上有overflow: hidden;，箭头无法显示，您需要正确的top和left值
鉴于您的框设计，如果要箭头的尖端位于确切的坐标上，您需要将draw()函数中的this.div.style.top值偏移35px，即this.div.style.top = (position.y - 35)。
查看高级标记，但它仍处于预览（pre-GA）状态。

希望这些翻译对您有所帮助。如果您有其他问题或需要进一步的翻译，请随时提问。

英文:

There are several issues with your code.

There is no need to declare the HTMLMarker functions within the for loop. Declare it outside and call the new HTMLMarker(...) and setMap() function within the loop.
I have added the price in the create function so you can refer to it as this.price and use it that way in the onAdd function.
The same goes for the div you are creating. Use this.div = document.createElement('div'); so you can refer to it in other functions.
I have used overlayMouseTarget which seems more appropriate than overlayImage for holding HTML markers.
In the draw() function, set the position of this.div instead of setting the position of the entire map pane.
Last but not least, your .arrow_box elements need to be position: absolute;

A few more things:

Include <script> tags within the <body> element
Declare your map initialization function init() as a callback in the api call &callback=init and use defer attribute to make sure the callback executes after the full DOM was parsed by the browser
Declare the init() function as a property of the window object
I fixed your CSS, the arrows can't display if you have overflow: hidden; on the box and you need correct top and left values
Given your box design, you need to offset the top value by 35px this.div.style.top = (position.y - 35) in the draw() function if you want the tip of the arrow to be on the exact coordinates
Have a look at Advanced Markers but it is still in Preview (pre-GA)

function init() {
var locations = [
[&#39;500k&#39;, -33.890542, 151.274856, 1],
[&#39;1.3M&#39;, -33.923036, 151.259052, 2],
[&#39;2.3M&#39;, -34.028249, 151.157507, 3],
[&#39;750k&#39;, -33.800101, 151.287478, 4],
[&#39;200K&#39;, -33.950198, 151.259302, 5],
];
var map = new google.maps.Map(document.getElementById(&#39;mapdiv&#39;), {
zoom: 10,
center: new google.maps.LatLng(-33.92, 151.25),
mapTypeId: google.maps.MapTypeId.ROADMAP,
});
function HTMLMarker(lat, lng, price) {
this.price = price;
this.pos = new google.maps.LatLng(lat, lng);
}
HTMLMarker.prototype = new google.maps.OverlayView();
HTMLMarker.prototype.onRemove = function() {}
HTMLMarker.prototype.onAdd = function() {
this.div = document.createElement(&#39;div&#39;);
this.div.className = &quot;arrow_box d-flex&quot;;
this.div.innerHTML = &quot;&lt;div class=&#39;m-auto&#39;&gt;SR &quot; + this.price + &quot;&lt;/div&gt;&quot;;
var panes = this.getPanes();
panes.overlayMouseTarget.appendChild(this.div);
}
HTMLMarker.prototype.draw = function() {
var overlayProjection = this.getProjection();
var position = overlayProjection.fromLatLngToDivPixel(this.pos);
this.div.style.left = position.x + &#39;px&#39;;
this.div.style.top = (position.y - 35) + &#39;px&#39;;
}
for (let i = 0; i &lt; locations.length; i++) {
let htmlMarker = new HTMLMarker(locations[i][1], locations[i][2], locations[i][0]);
htmlMarker.setMap(map);
}
}
window.init = init;

html,
body {
height: 100%;
margin: 0;
padding: 0;
}
#mapdiv {
height: 200px;
width: 100%;
}
.arrow_box {
position: absolute;
font-size: 10px;
width: 60px;
height: 20px;
background: blue;
border-radius: 10px;
margin: 10px -30px;
color: white;
cursor: pointer;
}
.arrow_box img {
min-width: 150px;
width: auto;
max-height: 100px;
height: auto;
border-radius: 5px;
}
.arrow_box:after {
top: 20px;
left: 50%;
border: solid transparent;
content: &quot; &quot;;
height: 0;
width: 0;
position: absolute;
pointer-events: none;
border-color: rgba(136, 183, 213, 0);
border-top-color: blue;
border-width: 5px;
margin-left: -5px;
}

&lt;link href=&quot;https://cdn.jsdelivr.net/npm/bootstrap@5.3.0-alpha1/dist/css/bootstrap.min.css&quot; rel=&quot;stylesheet&quot; integrity=&quot;sha384-GLhlTQ8iRABdZLl6O3oVMWSktQOp6b7In1Zl3/Jr59b6EGGoI1aFkw7cmDA6j6gD&quot; crossorigin=&quot;anonymous&quot;&gt;
&lt;div id=&quot;mapdiv&quot;&gt;&lt;/div&gt;
&lt;!-- 
The `defer` attribute causes the callback to execute after the full HTML
document has been parsed. For non-blocking uses, avoiding race conditions,
and consistent behavior across browsers, consider loading using Promises
with https://www.npmjs.com/package/@googlemaps/js-api-loader.
--&gt;
&lt;script src=&quot;https://maps.googleapis.com/maps/api/js?key=AIzaSyCkUOdZ5y7hMm0yrcCQoCvLwzdM6M8s5qk&amp;callback=init&quot; defer&gt;&lt;/script&gt;

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