Sam Atkins 4ad1695c78 WebContent: Add $() and $$() functions to browser console ...

These are based on the ones in Firefox:

`$(selector, element = document)`:
    Equivalent to `element.querySelector(selector)`.

`$$(selector, element = document)`:
    Equivalent to `element.querySelectorAll(selector)`.

2022-11-19 16:56:31 +00:00

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