Google map sync geocode delay

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清酒与你
清酒与你 2021-01-29 06:53

Here is it, jsfiddle

As you can see, I intend to make separate functions for google map features. The locate_self() function is used to return latlng coordi

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  •  有刺的猬
    2021-01-29 07:25

    The geolocation service is asynchronous. The simplest way around this is to use a callback instead of using return:

    function initialize_map(result) {
      if (result !== 'error') {
        gm_map = new google.maps.Map(gm_map_container, gm_map_options);
        if (!result) {
          result = new google.maps.LatLng(-34.397, 150.644);
        }
        gm_map.setCenter(result);
      }
    }
    
    function locate_self(callback) {
      if (navigator.geolocation) {
        navigator.geolocation.getCurrentPosition(function (position) {
          var pos = new google.maps.LatLng(position.coords.latitude, position.coords.longitude);
          callback(pos);
        });
      } else { callback('error'); }
    }
    
    locate_self(initialize_map);
    

    Demo.

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