Custom Elements publication history Date Status 3 May 2018 Retired 16 February 2018 Working Draft 13 October 2016 Working Draft 2 October 2016 Working Draft 30 August 2016 Working Draft 21 July 2016 Working Draft 21 June 2016 Working Draft 9 June 2016 Working Draft 23 May 2016 Working Draft 17 May 2016 Working Draft 26 February 2016 Working Draft 19 January 2016 Working Draft 16 December 2014 Working Draft 24 October 2013 Last Call Working Draft 14 May 2013 Working Draft