For persistent storage after closing the browser, you can use HTML5 “sessionStorage”. It only takes simple values, not complex objects (unless you do some JSON to string conversions).

Saving something:

sessionStorage.setItem(“key”, “value”)

Getting something:

sessionStorage.getItem(“key”)

Deleting an item:

sessionStorage.removeItem(“key”)

To save a complex object in JSON format:

sessionStorage.setItem(“key”, JSON.stringify(object))

Getting a complex object from JSON string format:

theObject = JSON.parse(sessionStorage.getItem(“key”))