jquery add option if not exist
By Beulah Hills at Mar 15 2020
jquery check if element has class starting with
By Rosemary Hirthe at Mar 14 2020
jquery check if attribute exists
By Sheila Carter at Mar 13 2020
test if jquery works
By Raquel Okuneva at Mar 07 2020
jquery see if element is visible
By Jasmine Murazik at Mar 02 2020
jquery detect if element has overflow
jquery check if screen size
By Francis Littel at Feb 25 2020
jquery if else on click
By Traci Gleichner at Oct 22 2019