I have two frames on a page: map.html and chart.html
map.html holds a Google map on which I can draw polygons and input entered by the user gets saved into the database. Backend is written in PHP.
chart.html displays the charts based on the input entered.
What I need is charts.html to dynamically change every time the user clicks on save button.
I tried refreshing after specified time interval, but that is grossly inefficient.