If you have an html element id, how do you find its name?

Question

The very common statement var someElement = document.getElementById('some-name');

gives one the variable/pointer to the element called 'some-name'.

But what if you need the reverse, namely: if you have some variable that's an element, how do you find its name?

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Ah, using .id is working now. I had an odd bug using a function I defined called id(name) = { return document.getElementById(name); }