I am facing same problem.I am using div but still error is coming.
Please help me out.

My code is

function updatepage(str,arg){
  
  //alert(str);str=html element

  var obj=document.getElementById('sub3');
  try
  {
    obj.innerHTML=str;
  }
  catch(ex)
  {
  alert(ex.message); // never displayed
  }
}

-Justin

It worked fine in some instances but not in others (got the “unknown error” or NO ERROR AT ALL (zero feedback, it just refused to do what I was telling it to — nice!) depending on how I wrote it).

I finally noticed that the ONLY difference was that the ones that worked had a DIV as the immediate ancestor of the A but the ones that didn’t had a P as the ancestor. Switching to DIVs fixed it (just plain old P and DIV tags in the HTML, no CSS applied, not written in dynamically…).

Why the parent element had any effect at all I can’t imagine because all of the DOM changes were further down the tree, and the wrap wasn’t the problem, it was inserting that second div which was then inside a div so it shouldn’t have had this problem, but it is what it is.

so it’d be helpful to look into the TagName of the element you are trying to set the innerHTML, as the following example:

catch(ex) {
  alert(obj.tagName);
}

Thanks again.