Saving and Displaying Saved Leaflet Markers in Map - javascript

i am frustrate on those markers in leaflet. i have searched/try/test and so on but still nothing happens.
i would appreciate if someone help me with my problem about save/view leaflet markers in map with web browser. tyia

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I am building a site with Leaflet.js and OpenStreet maps to make a site with many map datapoints. I have been trying to get the map center Lat, Lng, and Zoom into the URL so that users can share their location or go back to where they were viewing previously.
I have scoured the Leaflet docs but so far have not found anything that would help me.
Any assistance would be most appreciated
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I am trying to use MarkerClusterer to cluster together my points on a Google map. For some reason the map works but just shows individual markers and does not cluster them and I cannot figure out why. Any help would be appreciated.

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i need insert my map picture to my google map with markers, at sites. I have map without draggable, static zoom. Can you help me?
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So you're trying to lay an image on to google maps, in a specific location? If so, I think this should be able to help you:
https://developers.google.com/maps/documentation/javascript/examples/overlay-simple

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Do I need to use the KML source somehow?
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Google Maps API V3 - Load map first and then load markers

I am creating a page to show a list of locations(markers) on Google maps. The number of markers is dynamic and can be quite large. This will adversely affect user experience when the map (along with the markers) are taking too long to load.
Can anyone point me in the right direction to load the map first and then load the markers. Any help much appreciated.
Use a marker manager. I used one for Google Maps API v2 (for on-demand loading of ~2000 markers via AJAX) and I am sure there's one for API v3. A marker manager is class that allows you to selectively display markers on a Google Map. Instead of adding markers to map, you use add them to the marker manager and it takes care of when and how to display the markers. The markers that lie outside the "visible" region are removed hence its fairly memory efficient. A marker manager class may provide "clustering" option (or may be you need another class for this). A cluster manager displays one marker that encompasses multiple markers when markers are too close, specially at high zoom level. Hope this helps you in the right direction.

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