How can we add and remove data from local storage?(ASP.NET HTML 5 interview questions)

Data is added to local storage using "key" and "value". Below sample code shows country data "India" added with key value "Key001".

localStorage.setItem("Key001","India");

To retrieve data from local storage we need to use "getItem" providing the key name.

var country = localStorage.getItem("Key001");

You can also store JavaScript object's in the local storage using the below code.

var country = };

country.name = "India";

country.code = "I001";

localStorage.setItem("I001", country);

var country1 = localStorage.getItem("I001");

If you want to store in JSON format you can use "JSON.stringify" function as shown in the below code.

localStorage.setItem("I001",JSON.stringify(country));

What is the lifetime of local storage?

Local storage does not have a life time it will stay until either the user clear it from the browser or you remove it using JavaScript code.

Below is a ASP.NET interview question with answer video which explains how response.redirect is different from server.transfer.

Shiv Prasad Koirala

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