Leaflet GeoJSON bindtooltip from feature attribute

Question

Leaflet allows you to use .bindtooltip for geoJSON. Is it possible to access the tooltip options like {permanent: true, opacity: 0.5} etc when using this method?

// My JS
var layers_grid = L.geoJSON(false, {
      style: function(feature) { return feature.properties}
})
.bindTooltip(function (layer) {
    return layer.feature.properties.name;
 }
).addTo(map);

// Later in the script
$.getJSON(url, function( data ) {
  layers_grid.addData(data);
});

Edit: JSFiddle

Answer 1

You should be able to, yes. When you specify the tooltip options you do it in the form of:

myMarker.bindToolTip('Some description', <options>);

In your example, that function in bindToolTip that you have copied from the documentation retrieves a text attribute called 'name' from the GeoJson feature properties. That function is setting the tooltip text procedurally for each individual feature (i.e. they all have different tooltip text depending on their attributes). It takes the place of 'Some Description' in the line of code above. So, to set options like you want to, simply add your options after the tooltip text in the usual way:

.bindTooltip(function (layer) {
    return layer.feature.properties.name; //merely sets the tooltip text
 }, {permanent: true, opacity: 0.5}  //then add your options
).addTo(map);