A command to get a single attribute or property from a webpage, echo to stdout
Grab the full url from a specific anchor tag of interest (all options shown):
get-attribute --url=https://host.com/path --selector='a[href^="/videos"]' --attribute=href --useprop=true --timeout=5000 --launchargs='{"headless":true}'
# echoes the first matching href with full url from property: 'https://host.com/path/videos/123456789'