One possible use case is "live editing" of an object. Imagine a form that lets you build an HTML button from various properties: text, color, font, background,

One possible use case is "live editing" of an object. Imagine a form that lets you build an HTML button from various properties: text, color, font, background, border-radius etc. Using way.js the button can be updated immediately whenever you change one of its properties, without waiting for a server response. And saving the data to localstorage is very useful when the user is spending a long time filling the form and then accidentally closes the browser / clicks BACK / etc. It's a bit like autosaving a draft version of the form.