Check if localStorage is enabled

JavaScript, Browser · Dec 31, 2020

Checks if localStorage is enabled.

Use a try...catch block to return true if all operations complete successfully, false otherwise.
Use Storage.setItem() and Storage.removeItem() to test storing and deleting a value in Window.localStorage.

const isLocalStorageEnabled = () => {
  try {
    const key = `__storage__test`;
    window.localStorage.setItem(key, null);
    window.localStorage.removeItem(key);
    return true;
  } catch (e) {
    return false;
  }
};

isLocalStorageEnabled(); // true, if localStorage is accessible

Written by Angelos Chalaris

I'm Angelos Chalaris, a JavaScript software engineer, based in Athens, Greece. The best snippets from my coding adventures are published here to help others learn to code.

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