The sessionStorage Object

//the following example counts the number of times a user has clicked
//a button, in the current session

if (sessionStorage.clickcount) {
  sessionStorage.clickcount = Number(sessionStorage.clickcount) + 1;
} else {
  sessionStorage.clickcount = 1;
document.getElementById("result").innerHTML = "You have clicked the button " +
sessionStorage.clickcount + " time(s) in this session.";

Is equal to the localStorage object, except that it stores the data for only one session.

The data is deleted when the user closes the specific browser tab.

Related concepts

The sessionStorage Object — Structure map

Clickable & Draggable!

The sessionStorage Object — Related pages: