adding image namespace in svg through JS still doesn't show me the picture

Question

after working out getting the parameter through a scaled version of a picture, I am trying through Javascript adding the picture with the original size parameter in SVG.

Answer 1

You should never use getAttribute/setAttribute on attributes that have prefixes, see DOM 3 Core for more details on why.

It will work just fine if you use

getAttributeNS('http://www.w3.org/1999/xlink', 'href')

and

setAttributeNS('http://www.w3.org/1999/xlink', 'xlink:href', your_url_here).