var map = L.map('map', {drawControl: true}).setView([51.505, -0.09], 13);
     L.tileLayer('http://{s}.tile.osm.org/{z}/{x}/{y}.png', {
         attribution: '&copy; <a href="http://osm.org/copyright">OpenStreetMap</a> contributors'
     }).addTo(map);

Adding the edit toolbar

To use the edit toolbar you must initialise the Leaflet.draw control and manually add it to the map.

     var map = L.map('map').setView([51.505, -0.09], 13);
     L.tileLayer('http://{s}.tile.osm.org/{z}/{x}/{y}.png', {
         attribution: '&copy; <a href="http://osm.org/copyright">OpenStreetMap</a> contributors'
     }).addTo(map);
     // FeatureGroup is to store editable layers
     var drawnItems = new L.FeatureGroup();
     map.addLayer(drawnItems);
     var drawControl = new L.Control.Draw({
         edit: {
             featureGroup: drawnItems
         }
     });
     map.addControl(drawControl);

The key here is the featureGroup option. This tells the plugin which FeatureGroup contains the layers that should be editable. The featureGroup can contain 0 or more features with geometry types Point, LineString, and Polygon. Leaflet.draw does not work with multigeometry features such as MultiPoint, MultiLineString, MultiPolygon, or GeometryCollection. If you need to add multigeometry features to the draw plugin, convert them to a FeatureCollection of non-multigeometries (Points, LineStrings, or Polygons).

     var modifiedDraw = L.drawLocal.extend({
         draw: {
             toolbar: {
                 buttons: {
                     polygon: 'Draw an awesome polygon'
                 }
             }
         }
     });

The default state for the control is the draw toolbar just below the zoom control. This will allow map users to draw vectors and markers. Please note the edit toolbar is not enabled by default.

   var toolbar = L.Toolbar();
   toolbar.addToolbar(map);

Disabling a toolbar

If you do not want a particular toolbar in your app you can turn it off by setting the toolbar to false.

     var drawControl = new L.Control.Draw({
         draw: false,
         edit: {
             featureGroup: editableLayers
         }
     });

Disabling a toolbar item

If you want to turn off a particular toolbar item, set it to false. The following disables drawing polygons and markers. It also turns off the ability to edit layers.

     var drawControl = new L.Control.Draw({
         draw: {
             polygon: false,
             marker: false
         },
         edit: {
             featureGroup: editableLayers,
             edit: false
         }
     });

map.on(L.Draw.Event.CREATED; function (e) {
   var type = e.layerType,
       layer = e.layer;
   if (type === 'marker') {
       // Do marker specific actions
   }
   // Do whatever else you need to. (save to db; add to map etc)
   map.addLayer(layer);
});

     map.on('draw:edited', function (e) {
         var layers = e.layers;
         layers.eachLayer(function (layer) {
             //do whatever you want; most likely save back to db
         });
     });

   var tooltip = L.Draw.Tooltip();