【MAPBOX基础功能】15、mapbox地图事件：点击、移入、移出、解绑

前言

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mapbox地图事件：点击、移入、移出、解绑
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效果

在这里插入图片描述

代码实现

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>15、地图事件：点击、移入、移出、解绑</title>
    <link
      href="https://api.mapbox.com/mapbox-gl-js/v2.7.0/mapbox-gl.css"
      rel="stylesheet"
    />
    <script src="https://api.mapbox.com/mapbox-gl-js/v2.7.0/mapbox-gl.js"></script>
    <style>
      * {
        padding: 0;
        margin: 0;
        list-style: none;
        text-decoration: none;
      }
      html,
      body {
        width: 100%;
        height: 100%;
      }
      #map {
        width: 100%;
        height: 100%;
      }
    </style>
  </head>
  <body>
    <div id="map"></div>
    <script>
      mapboxgl.accessToken =
        'pk.eyJ1Ijoid2FuZ3Rvbmd4dWUiLCJhIjoiY2pzY3E2M2k0MDk3NzN5dDA0Nmtia2h0cCJ9.oP9fEJxOgVzm0dWGvL6tGg'
      const map = new mapboxgl.Map({
        container: 'map', // 容器 id
        style: 'mapbox://styles/mapbox/streets-v11', // mapbox底图
        center: [108, 35], // 初始化中心点
        zoom: 2, // 初始化层级
      })
      map.on('load', () => {
        add()
      })
      // 鼠标移入点位图层显示手型
      map.on('mouseenter', 'circle', () => {
        map.getCanvas().style.cursor = 'pointer'
      })
      // 鼠标移出点位图层还原
      map.on('mouseleave', 'circle', () => {
        map.getCanvas().style.cursor = ''
      })
      // 绑定点位图层的点击事件 获取当前点击的要素
      map.on('click', 'circle', clickEventCallback)

      // 点击事件绑定的回调函数
      function clickEventCallback(e) {
        const features = map.queryRenderedFeatures(e.point)
        if (features.length > 0) {
          console.log(features)
        }
        // 点击一次之后对点击事件进行解绑
        map.off('click', 'circle', clickEventCallback)
      }

      function add() {
        map.addSource('circle', {
          type: 'geojson',
          data: {
            type: 'FeatureCollection',
            features: [
              {
                type: 'Feature',
                properties: { id: '1', size: 10, color: 'green' },
                geometry: { type: 'Point', coordinates: [104, 35] },
              },
              {
                type: 'Feature',
                properties: { id: '2', size: 10, color: 'green' },
                geometry: { type: 'Point', coordinates: [110, 35] },
              },
              {
                type: 'Feature',
                properties: { id: '3', size: 10, color: 'green' },
                geometry: { type: 'Point', coordinates: [116, 35] },
              },
            ],
          },
        })
        map.addLayer({
          id: 'circle',
          type: 'circle',
          source: 'circle',
          paint: {
            'circle-radius': ['get', 'size'],
            'circle-color': ['get', 'color'],
            'circle-opacity': 1,
            'circle-stroke-color': ['get', 'color'],
            'circle-stroke-opacity': 1,
          },
        })
        map.addLayer({
          id: 'circle-highlight',
          type: 'circle',
          source: 'circle',
          paint: {
            'circle-radius': ['get', 'size'],
            'circle-color': 'red',
            'circle-opacity': 1,
            'circle-stroke-color': 'red',
            'circle-stroke-opacity': 1,
          },
          filter: ['in', 'id', '-10000'],
        })
      }
    </script>
  </body>
</html>

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原文地址：https://blog.csdn.net/weixin_44402694/article/details/125420774