How to add Link tag in header?

Question

  var linkTag = document.createElement ("link"); linkTag.rel = "canonical"; linkTag.href = "www.google.com"; var head = document.getElementsByTagName ("head")[0]; head.appendChild (linkTag); 

I have added above code it give me output as <link rel="canonical" href="www.google.com"> but I want to close link tag <link rel="canonical" href="www.google.com" /> like this.

Answer 1

You don't need to generate the closing tag because it's already there. The browser has already taken your text-based HTML and turned it into a tree of nodes.