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Fetch the complete documentation index at: https://docs.phantom.com/llms.txt

Use this file to discover all available pages before exploring further.

Event emitted upon changing accounts within your Phantom wallet. 
window.ethereum.on('accountsChanged', (newAccounts: String[]) => {
      // "newAccounts" will always be an array, but it can be empty.      
      if (newAccounts) {
        console.log(`switched to new account: ${newAccounts}`);
        accounts = newAccounts;
      } else {
        /**
         * In this case dApps could...
         *
         * 1. Not do anything
         * 2. Only re-connect to the new account if it is trusted
         *
         * ```
         * provider.send('eth_requestAccounts', []).catch((err) => {
         *  // fail silently
         * });
         * ```
         *
         * 3. Always attempt to reconnect
         */
  }
})
You can see an example of hooking into this event in our sandbox.