Hi,

I tried to use a content script to add some text at the beginning of the html page for a specific web page.

In foo.js:

document.write('Hello World!')

which doesn't work;

However, by following the "official" Chrome sample, I am able to change the first picture on the page:

document.images[0].src = "http://icanhascheezburger.files.wordpress.com/2007/01/i-can-has-cheezburger.jpg"
document.images[0].style.height = "auto"

It seems the same DOM to me. Any ideas why document.write won't work?

Thanks!

document.write is always a pretty sketchy function when using it on a page that wasn't entirely rendered by your JavaScript. It's best to either adjust the innerHTML of something, or make a new page element and insert it where you want it. You can get somewhat of an idea of the latter here. However you'll also need the document.createElement("elementName") function and potentially the document.createTextNode("text") function, which I don't see listed there.

I have to say document.write has NEVER worked for me. If I was you I would completely avoid it, and I totally agree with Waha.