What is window.localStorage

html, javascript, local-storage

Solution

localStorage/sessionStorage is part of HTML5 API. Essentially, this is what cookies are used for. But this is a lot better.

https://developer.mozilla.org/en/DOM/Storage

Problem

The `option.js` file of "Email this page" (Chrome extension example) contains the following code: ``` if (window.localStorage == null) { ... if (window.localStorage.customMailtoUrl == null) { ``` What does this mean? What is `window.localStorage`?

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