锚元素的href属性自动更改

Question

I am trying to access href attribute of HTML <a> element but somehow that value gets changed automatically.

Following is my code :

function getTDElement(anchorString)
{
  var td = document.createElement('td');
  // i think this is not a good way to add child to html element but 
  // i have to do it for some unavoidable reason
  td.innerHTML = anchorString;
  var anchor = td.firstChild;
  // following line prints url like
  // http://localhost/myservlet?myParam=foobar
  console.log(anchor.href);
  return td;
}

// im passing only /myservlet?myParam=foobar in following line
getTDElement("<a href=/myservlet?myParam=foobar>display</a>");

I am not able to understand why and how href attribute of element changes automatically.

Can anyone please shed some light on this issue?

Answer 1

The href property on a link element is a special property, not a simple string. It is liable to change your href value to the absolute URL it thinks it resolves to. You can get the unchanged value using getAttribute .

console.log(anchor.getAttribute('href'));