openlayers | ol.Overlay实现点击地图图标，图标跳动-CFANZ编程社区

openlayers | ol.Overlay实现点击地图图标，图标跳动

要在地图上显示并附加到单个地图位置的元素。就像module:ol/control/Control~Control，叠加层是可见的小部件。

与控件不同，它们不在屏幕上的固定位置，而是与地理坐标相关联，因此平移地图将移动覆盖而不是控件。

例子：

import Overlay from 'ol/Overlay';

var popup = new Overlay({
  element: document.getElementById('popup')
});
popup.setPosition(coordinate);
map.addOverlay(popup);

ol.Overlay

openlayers | ol.Overlay实现点击地图图标，图标跳动_css

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="stylesheet" href="https://openlayers.org/en/v5.3.0/css/ol.css" />
    <script type="text/javascript" src="https://openlayers.org/en/v5.3.0/build/ol.js"></script>
    <title>openlayers 标记点闪烁</title>
  </head>
  <body>
    <div id="map"></div>
    <div id="baidu"><img src="https://www.baidu.com/img/flexible/logo/pc/result@2.png"></div>
    <script>
      var beijing = ol.proj.fromLonLat([116.28, 39.54]);
      var map = new ol.Map({
        target: 'map',
        layers: [
          new ol.layer.Tile({
            source: new ol.source.OSM()
          })
        ],
        view: new ol.View({
          center: beijing,
          zoom: 4
        })
      });

      var tip = document.getElementById('baidu');

      var overlay = new ol.Overlay({
        element: tip,
        positioning: 'center-center'
      });
      overlay.setPosition(beijing);
      map.addOverlay(overlay)
      let flag = true
      let animate = null

      tip.onclick = () => {
        if (animate != null) {
          clearInterval(animate);
          animate = null;
        } else {
          animate = setInterval(() => {
            flag = !flag
            let po = flag ? '10px' : '-10px'
            tip.style.top = po
          }, 500);

        }


      }
    </script>
  </body>
  <style>
    #baidu {
      width: 100px;
      position: absolute;
      top: 10px;
    }

    img {
      width: 100%;
    }
  </style>
</html>

箴言：因为这些东西是非常简单的。不要抱怨自己学不会，那是因为你没有足够用心。

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