Simple counter component example

• Already in the DOM :

  • No attribute provided =>
  • Set properties via attributes :
    • No attributes provided =>
    • data-start="42" =>
    • data-by="100" =>
    • data-start="42" data-by="100" =>

• Dynamically attached to the DOM :

  • No properties & no attributes =>
  • counter.start = 1000; =>
  • count.setAttribute('start', '1000') =>