Baidu map asynchronous loading

Problem description

INFO

Problem：When calling Baidu Maps API, if Baidu's JS related files are not loaded completely, an undefined error will be reported. To solve this problem, asynchronous loading can be used.

Key code

function LoadBaiduMapScript() {
  const AK = '百度地图AK值';
  const BMap_URL = 'https://api.map.baidu.com/api?v=3.0&ak=' + AK + '&callback=onBMapCallback';
  return new Promise((resolve, reject) => {
    // Return directly if loaded
    if (typeof BMap !== 'undefined') {
      resolve(BMap);
      return true;
    }
    // Baidu map asynchronous load callback processing
    window.onBMapCallback = function () {
      console.log('百度地图脚本初始化成功...');
      resolve(BMap);
    };
    // Insert script
    let scriptNode = document.createElement('script');
    scriptNode.setAttribute('type', 'text/javascript');
    scriptNode.setAttribute('src', BMap_URL);
    document.body.appendChild(scriptNode);
  });
}

LoadBaiduMapScript();