Correction: If you are using the MVCArray to store Markers, you
should also call clear() on the markers or any other objects, too
avoid memory leaks.
So Pop() is the proper function to retrieve and remove a object from
the MVCArray.
google.maps.MVCArray.prototype.clear = function() {
var len = this.getLength();
for(var i=0; i<len; ++i) {
var value = this.pop();
if (typeof value.clear == 'function') { value.clear(); }
};
}
google.maps.Marker.prototype.clear = function() {
alert("Marker.clear called.")
this.setMap(null);
}
On Jun 22, 5:27 pm, William Choy <[email protected]> wrote:
> ince it is something you will probably do quite often. You should make
> add a "clear" function to theMVCArray.
>
> google.maps.MVCArray.prototype.clear = function (){
> // work backward should be faster
> for(var i=this.getLength(); i>0; this.removeAt(--i)) {};
> }
> .....
> myMvcArray.clear();
> myMvcArray.push(new google.maps.LatLng(40.6, -73.9));
> myMvcArray.push(new google.maps.LatLng(53.4,117.0)); // will show a
> line from NewYork to Siberia
>
> Pop is more expensive operation, then removeAt.
>
> I also get the length once.
>
> You have to watch out for the order/index which you delete or else
> you have a half empty array.
> try "myMvcArray.removeAt(0);" or go backward
>
> On Jun 15, 1:15 pm, Chad Killingsworth
>
> <[email protected]> wrote:
> > Standard JavaScript array methods/operations won't work on MVCArrays.
>
> > Try:
>
> > while(points.getLength() > 0) points.pop();
>
> > Chad Killingsworth
>
> > On Jun 15, 11:48 am, Nathan Raley <[email protected]> wrote:
>
> > > Your second one is what I use to clear mine out.
>
> > > On Tue, Jun 15, 2010 at 11:44 AM, Jason Sanford
> > > <[email protected]>wrote:
>
> > > > Just a quick guess but would this work:
>
> > > > myMvcArray.forEach(function(item,index){
> > > > myMvcArray.removeAt(index);
> > > > });
>
> > > > If not how about:
>
> > > > for (i=0;i<myMvcArray.getLength();i++){
> > > > myMvcArray.removeAt(i);
> > > > }
>
> > > > I don't know if these work but glancing at the docs (
> > > >http://code.google.com/apis/maps/documentation/javascript/reference.h...)
> > > > that's what I would guess.
>
> > > > On Tue, Jun 15, 2010 at 12:29 PM, Pil <[email protected]> wrote:
>
> > > >> On Jun 15, 6:05 pm, Nathan Raley <[email protected]> wrote:
> > > >> > Did you try points = [];?
>
> > > >> Yes, this doesn't work when I say
>
> > > >> poly.setPath(points);
>
> > > >> i.e. nopolylinewill appear. When I use aMVCArrayall works well.
> > > >> TheMVCArrayshould be shared alternately between aPolylineand a
> > > >> Polygon. This all works well - but I found no way to set the elements
> > > >> of theMVCArrayto 0.
>
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