document.getElementById('dvFile').innerHTML += txt;

Question

document.getElementById('dvFile').innerHTML += txt; is not working internet explorer 7

Answer 1

You can only add html with +:

document.getElementById('dvFile').innerHTML = txt;

If you want previous html to be preserved, you can try this way:

document.getElementById('dvFile').innerHTML = document.getElementById('dvFile').innerHTML + txt;

Answer 2

First off you don't have a real question here. It's a statement at best. A bug report maybe.

If you want help you should provide details.

Your problem is probably because you are trying to set innerHTML of a <table> element or a<select>. Because in IE:

The innerHTML property of the TABLE, TFOOT, THEAD, and TR elements are read-only. Q239832

Things you can do include:

• using DOM methods to add content (insertRow, insertCell)
• using a workaround with a wrapper element

[Demo]

var txt = "<tr><td>1</td> <td>2</td></tr>";
var table = document.getElementById('table_id');
var temp  = document.createElement("div");
temp.innerHTML = "<table><tbody>" + txt + "</tbody></table>";
table.appendChild(temp.firstChild.firstChild);

Answer 3

I think, your object called dvFile is wrong type for innerHTML. dvFile must not be represented any kind of input.

Check following valid script.

<script>
function setTimeout_Testing()
{
count = 1;
document.getElementById("writeMe").innerHTML += count;
}
setTimeout("setTimeout_Testing();", 1000);
</script>

<div id="writeMe"></div>

http://www.ppshein.net/index.cfm/2010/10/18/different-between-settimeout-and-setinterval