Why does the page go blank when injecting JavaScript code via the address bar?

Question

So if I want to make a change, for example in this page (stackoverflow.com), using:

javascript:document.getElementById("hlogo").innerHTML = "10";

The page goes blank, only showing the string "10", even though the source code is still there.

Yet if I do this in an HTML document internally via the JavaScript console it doesn't remove the rest of the content visually.

so what's the trouble? where are you doing this javascript callout?? — Sudhansu Choudhary, Jun 22 '15 at 19:11

score 4 · Accepted Answer · edited May 23 '17 at 12:06

4

Append a void(0) or any expression returning an undefined value:

javascript:document.getElementById("hlogo").innerHTML = "10";void(0);

edited May 23 '17 at 12:06

Community

answered Jun 22 '15 at 19:12

A. Andres

1 Answers1