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MutationObserver

The MutationObserver interface provides the ability to watch for changes being made to the DOM tree.

Constructor​

MutationObserver()

  • Creates and returns a new MutationObserver which will invoke a specified callback function when DOM changes occur.

Instance methods​

disconnect()

  • Stops the MutationObserver instance from receiving further notifications until and unless observe() is called again.

observe()

  • Configures the MutationObserver to begin receiving notifications through its callback function when DOM changes matching the given options occur.

takeRecords()

  • Removes all pending notifications from the MutationObserver's notification queue and returns them in a new Array of MutationRecord objects.

Reference​

https://developer.mozilla.org/en-US/docs/Web/API/MutationObserver