How to store and retrive json from localstorage.

localStorage only supports strings. Use JSON.stringify() and JSON.parse().

--save json in localstorage

var hash={};
localStorage['hash']=JSON.stringify(hash);

--retrive json from localstorage

var jsonObj=JSON.parse(localStorage['hash']);

How to Show and Hide Div Using JavaScript?

Java Script Code

html Code

Step First 
        Step Second
    
This Is Step First Panel
    
This is Step Two Panel
    

How to access server control in javascript in asp .net ?

This is your Server Control

and this is JavaScript code to access asp .net server control in javascript