RGS questions

• Dropdown android - call setOnItemSelectedListener only when user change its value
• removeclass() from showcomments after click - from all similar classes?
• Improve a big mysql select performance
• check if year in string is = or bigger than 2017
• Allow just one click in class JQUERY
• how to add border in an arrow before a div?
• Can I still use smart_banner in XML?
• recyclerView setOnScrollChangeListener = need api 23 (current min is 15)
• Avoid WorkManager to run immediately?
• center a div inside a fixed one at the center of the screen

RGS answers