How to insert text in a td with id, using JavaScript

Question

I know it may be a simple thing, but I can\'t figure out. I am trying to insert some text coming from a JavaScript function onload event into a td.

Answer 1

If your is not empty, one popular trick is to insert a non breaking space   in it, such that:

Then you will be able to use:

 document.getElementById('td1').firstChild.data = 'New Value';

Otherwise, if you do not fancy adding the meaningless   you can use the solution that Jonathan Fingland described in the other answer.