setAttribute makes the attribute name lowercase

Question

I create elements with the var l = document.createElement("label");and I assign its attributes with l.setAttribute("formControlName","e"); . The problem is that the setAttribute method puts the formControlName in lowercase letters as you can see in the image below. I work with ionic so the capital letters are needed. Does anyone see what I did wrong?

Answer 1

Use this instead:

l.setAttributeNS(null, "formControlName","e");

'setAttributeNS()' doesn't convert the name to lower case.