【MAPBOX基础功能】20、mapbox获取当前已上图的所有的图层

前言

官网指引，生成accesstoken，下载相关依赖请翻阅[https://blog.csdn.net/weixin_44402694/article/details/125414381?spm=1001.2014.3001.5501](https://blog.csdn.net/weixin_44402694/article/details/125414381?spm=1001.2014.3001.5501)
本文使用官网accesstoken，请自行生成私人token
mapbox获取当前已上图的所有的图层
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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>20、获取当前已上图的所有的图层</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%;
      }
      .btn-list {
        position: fixed;
        top: 100px;
        left: 100px;
      }
    </style>
  </head>
  <body>
    <div id="map"></div>
    <ul class="btn-list">
      <li onclick="getAllLayers()"><button>获取</button></li>
    </ul>
    <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: 4, // 初始化层级
      })
      map.on('load', () => {
        point()
        line()
        polygon()
      })

      // 绘制点位
      function point() {
        if (map && map.getSource('circle')) {
          map.removeLayer('circle')
          map.removeSource('circle')
        }
        map.addSource('circle', {
          type: 'geojson',
          data: {
            type: 'FeatureCollection',
            features: [
              {
                type: 'Feature',
                properties: { size: 10, color: 'red' },
                geometry: { type: 'Point', coordinates: [104, 35] },
              },
              {
                type: 'Feature',
                properties: { size: 5, color: 'green' },
                geometry: { type: 'Point', coordinates: [110, 35] },
              },
              {
                type: 'Feature',
                properties: { size: 5, color: 'red' },
                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': 'red',
            'circle-stroke-opacity': 1,
          },
        })
      }
      // 绘制线
      function line() {
        if (map && map.getSource('line')) {
          map.removeLayer('line')
          map.removeSource('line')
        }
        map.addSource('line', {
          type: 'geojson',
          data: {
            type: 'FeatureCollection',
            features: [
              {
                type: 'Feature',
                properties: { width: 3, color: 'red' },
                geometry: {
                  type: 'LineString',
                  coordinates: [
                    [120, 30],
                    [122, 31],
                    [124, 32],
                    [126, 33],
                  ],
                },
              },
              {
                type: 'Feature',
                properties: { width: 2, color: 'green' },
                geometry: {
                  type: 'LineString',
                  coordinates: [
                    [110, 30],
                    [112, 31],
                    [114, 32],
                    [116, 33],
                  ],
                },
              },
              {
                type: 'Feature',
                properties: { width: 1, color: 'red' },
                geometry: {
                  type: 'LineString',
                  coordinates: [
                    [100, 30],
                    [102, 31],
                    [104, 32],
                    [106, 33],
                  ],
                },
              },
            ],
          },
        })
        map.addLayer({
          id: 'line',
          type: 'line',
          source: 'line',
          paint: {
            'line-color': ['get', 'color'],
            'line-width': ['get', 'width'],
            'line-opacity': 1,
          },
        })
      }
      // 绘制面
      function polygon() {
        if (map && map.getSource('surface')) {
          map.removeLayer('surface')
          map.removeSource('surface')
        }
        map.addSource('surface', {
          type: 'geojson',
          data: {
            type: 'Feature',
            properties: {
              color: 'red',
            },
            geometry: {
              type: 'Polygon',
              coordinates: [
                [
                  [120, 30],
                  [124, 32],
                  [126, 34],
                  [130, 30],
                  [128, 28],
                  [120, 30],
                ],
              ],
            },
          },
        })
        map.addLayer({
          id: 'surface',
          type: 'fill',
          source: 'surface',
          paint: {
            'fill-color': ['get', 'color'],
            'fill-opacity': 1,
            'fill-outline-color': ['get', 'color'],
          },
        })
      }

      // 修改鼠标样式
      function getAllLayers() {
        console.log(map.getStyle().layers)
      }
    </script>
  </body>
</html>

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原文地址：https://blog.csdn.net/weixin_44402694/article/details/125421173