I squealed in an excited way, having got even (9)

I believe the answer is:

equalised

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'got even' is the definition.
(I've seen this before)

'i squealed in an excited way' is the wordplay.
'i squealed' anagrams to 'EQUALISED'.
But, I am unsure how this is indicated.

'having' is the link.

Can you help me to learn more?

(Other definitions for equalised that I've seen before include "Brought into line" , "Drew level" , "Got even" .)

I've seen this clue in The Independent.

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