How to get images src link in javascript using context menu in chrome?

I'm trying to get the images src URL and add an "" tag to it using JS and a chrome context menu. I'm new to JS and coding in general and was wondering if I'm on the right track.

chrome.contextMenus.create({
  title: "Copy and add <img src>", 
  contexts:["image", "link"],
  onclick:copyToClipboard
  });


function copyToClipboard(info){
    var srcURL = "<img src=\""+info.srcUrl+"\">";
    srcURL.select();
    document.execCommand('copy', false, null);
}

Right now it doesn't do anything.. I get an error saying select() is not a function. 🤔