Zoomslider

<!--
  示例：OpenLayers 缩放滑块
  要点：ZoomSlider 控件以竖向滑块替代加减按钮，拖动即可连续缩放
  依赖：OpenLayers 10.3.1 · jsDelivr CDN
-->
<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta name="robots" content="noindex,follow">
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>缩放滑块</title>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/ol@10.3.1/ol.css">
<style>
  html,body{height:100%;margin:0}
  body{display:flex;flex-direction:column;overflow:hidden;
       font:13px/1.6 -apple-system,"Segoe UI","PingFang SC",sans-serif}
  .bar{flex:0 0 auto;padding:8px 12px;background:#f6f7f9;border-bottom:1px solid #e3e6ea;
       display:flex;gap:10px;align-items:center;flex-wrap:wrap;font-size:12px;color:#58606e}
  .bar label{display:flex;gap:5px;align-items:center;cursor:pointer}
  .bar select,.bar input[type=range]{font-size:12px}
  .bar .val{font-family:ui-monospace,Consolas,monospace;color:#1f5fd0;min-width:44px}
  .bar .sep{width:1px;height:16px;background:#d8dce2}
  #map{flex:1 1 auto;min-height:0;background:#eef0f3}
  .maps{flex:1 1 auto;min-height:0;display:grid;grid-template-columns:1fr 1fr 1fr;gap:2px;background:#ccd3db}
  .map{min-height:0;background:#eef0f3}
</style>
</head>
<body>
<div class="bar">
  <span>三张独立地图 · 各自带 ZoomSlider</span>
</div>
<div class="maps">
  <div id="map1" class="map"></div>
  <div id="map2" class="map"></div>
  <div id="map3" class="map"></div>
</div>
<script src="https://cdn.jsdelivr.net/npm/ol@10.3.1/dist/ol.js"></script>
<script>
(function () {
  'use strict';

  if (typeof ol === 'undefined') {
    document.getElementById('map').textContent = 'OpenLayers 加载失败，请检查能否访问 cdn.jsdelivr.net';
    return;
  }


  function createMap(target, lon, lat, zoom) {
    var map = new ol.Map({
      target: target,
      layers: [new ol.layer.Tile({source: new ol.source.XYZ({url: 'https://server.arcgisonline.com/ArcGIS/rest/services/World_Street_Map/MapServer/tile/{z}/{y}/{x}', attributions: 'Tiles © Esri'})})],
      view: new ol.View({
        center: ol.proj.fromLonLat([lon, lat]),
        zoom: zoom
      })
    });
    map.addControl(new ol.control.ZoomSlider());
    return map;
  }

  var map1 = createMap('map1', 116.391, 39.907, 8);
  var map2 = createMap('map2', 121.474, 31.230, 6);
  var map3 = createMap('map3', 113.264, 23.129, 7);

})();
</script>
</body>
</html>