In reference to the Open Street Map for Heatmap tutorial in this link
http://www.d3noob.org/2014/02/generate-heatmap-with-leafletheat-and.html
I want to know how could I keep the state of zoom level when I refresh the page. Suppose I changed the blur value via $_POST and the page refreshes then I go back to the default zoom(10). But I want to be at the same zoom level I was when I just wanted to change the blur value.
Use leaflet.hash
http://mlevans.github.io/leaflet-hash/
So the zoom and the position are saved in the window.hash object