Attribution Note

<!--
  示例：数据源版权标注
  要点：ol.source.XYZ 的 attributions 参数自定义署名，Attribution 控件可折叠
  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>数据源版权标注</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;font-size:12px;color:#58606e}
  .bar label{display:flex;gap:5px;align-items:center;cursor:pointer}
  #map{flex:1 1 auto;min-height:0;background:#eef0f3}
</style>
</head>
<body>
<div class="bar">
  <label><input type="checkbox" id="collapse" checked> 折叠版权</label>
  <span>版权控件位于右下角</span>
</div>
<div id="map"></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').innerHTML =
      '<div style="padding:20px;color:#b42318">OpenLayers 加载失败，请检查能否访问 cdn.jsdelivr.net</div>';
    return;
  }

  var attribution = '© <a href="https://www.esri.com/">Esri</a> 及数据提供者';

  /* 也可以构造后调用 setAttributions 追加署名 */
  var baseSource = new ol.source.XYZ({url: 'https://server.arcgisonline.com/ArcGIS/rest/services/World_Street_Map/MapServer/tile/{z}/{y}/{x}', attributions: 'Tiles © Esri'});
  baseSource.setAttributions(attribution);

  var base = new ol.layer.Tile({ source: baseSource });

  var map = new ol.Map({
    target: 'map',
    layers: [base],
    view: new ol.View({
      center: ol.proj.fromLonLat([116.3974, 39.9093]),
      zoom: 12
    }),
    controls: ol.control.defaults.defaults({ attribution: false })
  });

  var attrControl = null;

  function mount(collapsible) {
    if (attrControl) {
      map.removeControl(attrControl);
    }
    attrControl = new ol.control.Attribution({
      collapsible: collapsible,
      collapsed: collapsible
    });
    map.addControl(attrControl);
  }

  mount(true);

  /* collapsible 只在构造时生效，切换需要重建控件 */
  document.getElementById('collapse').addEventListener('change', function () {
    mount(this.checked);
  });
})();
</script>
</body>
</html>