All HTML Tags supported by a Browser

Question

Using JavaScript, is it possible to obtain a list of the tags that a browser supports?

Answer 1

There is no general way but each element has specific way to see if it's supported

Canvas element support:

var canvasSupported = "getContext" in document.createElement("canvas");

Input type support:

var input = document.createElement("input");
input.type = "color"
var colorInputSupported = input.type === "color";
//The above relies on the fact that type is enumerated and 
//falls back to "text" with invalid value
//The technique doesn't necessarily carry over to other properties

Audio element support:

var audioElementSupported = "play" in document.createElement("audio");

Progress element support

var progressElementSupported = "max" in document.createElement("progress");