How to Preserve JavaScript Variables Across Page Refreshes

In JavaScript, variables typically lose their values when the page is refreshed. However, there are techniques to make variables persistent.

One such technique involves utilizing web storage mechanisms like window.localStorage or window.sessionStorage. LocalStorage persists data beyond browser sessions, while sessionStorage retains data only within the current session.

To save a variable using localStorage, employ the following:

var someVarName = "value";
localStorage.setItem("someVarKey", someVarName);

To retrieve the saved variable:

var someVarName = localStorage.getItem("someVarKey");

Remember, localStorage only stores string values. To work with other data types, consider using JSON.stringify and JSON.parse.

For further information and compatibility options, consult the MDN's DOM storage guide and other resources provided in the reference section below.