如何在传单地图上突出显示选定的行?

how do I highlight a line? I have used "weight" but it's more a border to a line. I would like to see the line is getting bolder.

这是我的代码:

document.onload = loadMap();

function loadMap() {
  var map = L.map('map').setView([37.8, -96], 4);


  L.tileLayer('https://api.tiles.mapbox.com/v4/{id}/{z}/{x}/{y}.png?access_token={accessToken}', {
    attribution: 'Map data &copy; <a href="http://openstreetmap.org">OpenStreetMap</a> contributors,<a href="http://creativecommons.org/licenses/by-sa/2.0/">CC-BY-SA</a>, Imagery © <a href="http://mapbox.com">Mapbox</a>',
    maxZoom: 18,
    id: 'mapbox.streets',
    accessToken: 'pk.eyJ1IjoiZW======V6ZTdlb2V5cyJ9.3HqHQ4BMRvSPaYe8ToA7YQ'
  }).addTo(map);


  var marker = L.marker([51.5, -0.09]).addTo(map);


  var myLines = [{
    "type": "LineString",
    "properties": {
      "id": "1"
    }
    "coordinates": [
      [-100, 40],
      [-105, 45],
      [-110, 55]
    ]
  }, {
    "type": "LineString",
    "properties": {
      "id": "2"
    }
    "coordinates": [
      [-105, 40],
      [-110, 45],
      [-115, 55]
    ]
  }];

  var myLayer = L.geoJson().addTo(map);
  myLayer.addData(myLines);


  geojson = L.geoJson(myLines, {
    onEachFeature: onEachFeature
  }).addTo(map);

}



function highlightFeature(e) {
  var layer = e.target;

  layer

  layer.setStyle({
    weight: 25,
    color: '#ff3300',
    dashArray: '',
    fillOpacity: 0.7
  });

  if (!L.Browser.ie && !L.Browser.opera) {
    layer.bringToFront();
  }
}

function resetHighlight(e) {
  geojson.resetStyle(e.target);


  layer.setStyle({
    weight: 5,
    color: '#0000ff',
    dashArray: '',
    fillOpacity: 0.7
  });
}


function onEachFeature(feature, layer) {
  layer.on({
    mouseover: highlightFeature,
    mouseout: resetHighlight,
    // click: zoomToFeature
  });
}

$('select[name="dropdown"]').change(function() {

  var item = $(this).val();
  alert("call the do something function on option " + item);
  //how to make the chosen line highlighted ??

});

推荐答案

weight 属性不会改变线条边框，它会改变笔画宽度(以像素为单位).您会获得 border 效果，因为您添加了两次线条.这里:

myLayer.addData(myLines);

geojson = L.geoJson(myLines, {
    onEachFeature: onEachFeature
  }).addTo(map);