使用JVector随机着色的美国地图

时间:2013-04-30 00:08:19

标签: javascript map jvectormap

我在使用JVector API对美国地图进行编码时会遇到问题。这是代码:

<html>
  <script src="scripts/jquery-1.8.2.js"></script>
  <script src="scripts/jquery-jvectormap-1.2.2.min.js"></script>
  <script src="scripts/jquery-jvectormap-us-aea-en.js"></script>
<body>
  <div  id="us-map" style="position: relative;   width: 800px; height: 600px"></div>
  <script>

  <!--// I commented out this piece of script. It works fine. This is a test trial to load the map
    // $(function(){
    // $('#us-map').vectorMap({map: 'us_aea_en'});
    // });
    -->

    <!-- I have issues with the following function -->
/*it does not even load the map. What it should do is to generate random colors
* for the map as the "update" button is pressed 
*/
$(function(){
  var palette = ['#66C2A5', '#FC8D62', '#8DA0CB', '#E78AC3', '#A6D854'];
      generateColors = function(){
        var colors = {},
            key;

        for (key in map.regions) {
          colors[key] = palette[Math.floor(Math.random()*palette.length)];
        }
        return colors;
      },
      map;

  map = new jvm.USMap({
    map: 'us_aea_en',
    container: $('#map'),
    series: {
      regions: [{
        attribute: 'fill'
      }]
    }
  });
  map.series.regions[0].setValues(generateColors());
  $('#update-colors-button').click(function(e){
    e.preventDefault();
    map.series.regions[0].setValues(generateColors());
  });
})
    </script>
    </div>
  </body>
</html>

以下是指向scripts folder的{{3}}链接,其中包含.js个文件。 function()有什么问题?

1 个答案:

答案 0 :(得分:9)

您的问题与直接从http://jvectormap.com/examples/random-colors/

复制的代码有关

使随机美国地图工作的代码是:

仅从他们的来源获取(仅从他们的来源获取地图:更改为美国)。

<html>
  <script src="scripts/jquery-1.8.2.js"></script>
  <script src="scripts/jquery-jvectormap-1.2.2.min.js"></script>
  <script src="scripts/jquery-jvectormap-us-aea-en.js"></script>
<body>
  <div  id="map" style="position: relative;   width: 800px; height: 600px"></div>

 <script>
      //@code_start
      $(function(){
        var palette = ['#66C2A5', '#FC8D62', '#8DA0CB', '#E78AC3', '#A6D854'];
            generateColors = function(){
              var colors = {},
                  key;

              for (key in map.regions) {
                colors[key] = palette[Math.floor(Math.random()*palette.length)];
              }
              return colors;
            },
            map;

        map = new jvm.WorldMap({
          map: 'us_aea_en',
          container: $('#map'),
          series: {
            regions: [{
              attribute: 'fill'
            }]
          }
        });
        map.series.regions[0].setValues(generateColors());
        $('#update-colors-button').click(function(e){
          e.preventDefault();
          map.series.regions[0].setValues(generateColors());
        });
      })
      //@code_end
    </script>   
    </div>
  </body>
</html>

以下错误:

第一次检查时生成

Error: ReferenceError: map is not defined
Source File: file:///D:/xampp_october_28_2011/htdocs/stackoverflow/scripts/map.html
Line: 30

在尝试使用之前,您没有map变量。 此外,您的代码似乎隐藏了需要修复的各种其他错误。

也发布到了dropbox:https://dl.dropboxusercontent.com/u/6465647/mapRandom.html