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javascript - “未捕获的 TypeError：this.setValues 不是函数”使用 Google Maps API v3

问题描述

尝试修改示例并使用 markerLabel 类而不是 google.maps.marker。在这里搜索解决方案，但找不到任何东西。

被markerwithlabel声明为var marker = new MarkerWithLabel({

我收到这个错误

Uncaught TypeError: this.setValues is not a function

请检查下面的codepen。 https://codepen.io/anon/pen/LgOzRO

我试图仅包含与此问题相关的代码以及重现此问题所需的最少代码。

 var map;
var locations = [];

function initialiseMap() {
  $.getJSON("https://sheets.googleapis.com/v4/spreadsheets/1fBLlw8xlO_yhL8rYfFlQnzvKR-swEtE7NRX41ysARCk/values/Sheet1!A2:Q?key=AIzaSyD112yF6ORTtrx1-ugfhJLcx1VHDOla1Vs", function(data) {
        // data.values contains the array of rows from the spreadsheet. Each row is also an array of cell values.
        // Modify the code below to suit the structure of your spreadsheet.
        $(data.values).each(function() {
            var location = {};
                location.title = this[2];
                location.latitude = parseFloat(this[15]);
                location.longitude = parseFloat(this[16]);

                locations.push(location);
        });

      // Center on (0, 0). Map center and zoom will reconfigure later (fitbounds method)
      var mapOptions = {
        zoom: 10,
        center: new google.maps.LatLng(0, 0)
      };
      var map = new google.maps.Map(document.getElementById('map'), mapOptions);
      setLocations(map, locations);
  });
}


function setLocations(map, locations) {
  var bounds = new google.maps.LatLngBounds();
  // Create nice, customised pop-up boxes, to appear when the marker is clicked on
  var infowindow = new google.maps.InfoWindow({
    content: "Content String"
  });
  for (var i = 0; i < locations.length; i++) {
    var new_marker = createMarker(map, locations[i], infowindow);
    bounds.extend(new_marker.position);
  }
  map.fitBounds(bounds);
}

function createMarker(map, location, infowindow) {

  // Modify the code below to suit the structure of your spreadsheet (stored in variable 'location')
  var position = {
    lat: parseFloat(location.latitude),
    lng: parseFloat(location.longitude)
  };
  var marker = new MarkerWithLabel({
    position: position,
    map: map,
    title: location.title,
     labelClass: "labels", // the CSS class for the label
        labelInBackground: false,
        icon: pinSymbol('red')
  });
  google.maps.event.addListener(marker, 'click', function() {

  });
  return marker;
}

function pinSymbol(color) {
    return {
        path: 'M 0,0 C -2,-20 -10,-22 -10,-30 A 10,10 0 1,1 10,-30 C 10,-22 2,-20 0,0 z',
        fillColor: color,
        fillOpacity: 1,
        strokeColor: '#000',
        strokeWeight: 2,
        scale: 2
    };
}

标签： javascripthtmlgoogle-maps-api-3

解决方案

您在 HTML 方面遇到了排序问题。加载带有<script>标签的 Javascript 时，您应该使用async or defer，而不是同时使用。在这种情况下，Google API 应该在页面的 Javascript之后initialiseMap加载，以便及时定义回调，，因此它应该具有defer属性。但是谷歌API需要在加载V3之前MarkerWithLabel加载，所以V3脚本也需要该defer属性，需要跟在谷歌API脚本之后。

所以你的 HTML 应该是

<script defer src="https://maps.googleapis.com/maps/api/js?key=AIzaSyD112yF6ORTtrx1-ugfhJLcx1VHDOla1Vs&callback=initialiseMap"></script>
<script defer src="https://cdn.rawgit.com/googlemaps/v3-utility-library/master/markerwithlabel/src/markerwithlabel.js"></script>

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