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HTML 

              
                
  <div id="landno-panel" class="container mainnav">
    <div class="row">
      <div class="col-lg-offset-3 col-md-offset-3 col-lg-6 col-md-6 col-sm-6">
        <div class="panel panel-primary">
          <div class="panel-heading">
            <h3 class="panel-title">地號轉地圖</h3>
          </div>
          <div class="panel-body">
            <form class="form-horizontal">
              <fieldset>
                <label for="textArea" class="col-lg-3 control-label">輸入地號：</label>
                <div class="col-lg-9">
                  <textarea class="form-control js_landno" rows="10"></textarea>
                </div>

                <div class="col-lg-9 col-lg-offset-3">
                  <button class="btn btn-primary js_generate_map">
                    產生地圖
                  </button>
                </div>
              </fieldset>
            </form>
          </div>
        </div>
      </div>
    </div>
  </div>
  <div id="map-canvas"></div>
!

CSS 

              
                html,body {
  width: 100%;
}

#map-canvas {
  width: 100%;
  height: 600px;
}
!

JS 

              
                (function(root, factory){
  "use strict";
  if (typeof define === "function" && define.amd) {
    define(["jquery", "google"], factory);
  } else if (typeof exports === "object") {
    module.exports = factory(require("jquery", "google"));
  } else {
    root.Mapper = factory(root.jQuery, root.google);
  }
})(this, function($, google) {
	'use strict';

	var exports = {
		map_object: null,
		map_id: 'map-canvas',
		api_url: 'http://twland.ronny.tw/index/search'
	};

	exports.getAPIUrl = function(query) {
		if (Object.keys(query).length > 0){
			return exports.api_url + '?' + $.param(query);
		}

		return exports.api_url;
	};

	exports.page = {
		init: function() {
			// TODO : add event listener
			$('.js_generate_map').click(function(event) {
				event.preventDefault();
				var landno_str = $('.js_landno').val();
				var landno_list = landno_str.split('\n');

				exports.map.show(landno_list);
			});
		}
	};

	exports.map = {
		init: function(options) {
			var map_options = $.extend({
				zoom: 15,
				scrollwheel: false
			}, options);

			var map_element = document.getElementById(exports.map_id);
			exports.map_object = new google.maps.Map(map_element, map_options);
		},

		show: function(landno_list) {
			if (exports.map_object == null) {
				exports.map.init();
			}

			landno_list = $.isArray(landno_list) ? landno_list : [landno_list];
			var query = { lands: landno_list };
			var json_url = exports.getAPIUrl(query);

			$.getJSON(json_url, function(geo_json){
				if (! $.isEmptyObject(geo_json)){
					var center = {
						lat: -1, 
						lng: -1
					};

					var features = geo_json.features;

					features.forEach(function(feature){
						exports.map_object.data.addGeoJson(feature);

						var lat = feature.properties.ycenter;
						var lng = feature.properties.xcenter;

						if (lat >0 && lng > 0) {
							center.lat = lat;
							center.lng = lng;
						}

					});
		 			// TODO : reset the map center
	 				exports.map_object.setCenter(new google.maps.LatLng(center.lat, center.lng));
				}
			});
		}
	};

	exports.init = function() {
		exports.page.init();
	};

	exports.init();

	return exports;
});
!
999px

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