document.queryCommandValue returns (empty string) in Firefox
contenteditable, firefox, html, javascript
Solution
For bold, italic and similar, use `document.queryCommandState()`. Use `document.queryCommandValue()` for non-Boolean commands.
http://jsfiddle.net/nTQd2/1/
Problem
I want to read if a certain text in a contenteditable element is bold or not. In Chrome `document.queryCommandValue("bold")` returns `"true"/"false"` as a string, IE returns a `true/false` as a boolean, but Firefox returns `(empty string)` in the developer console. I made a fiddle as an example: http://jsfiddle.net/nTQd2/ If you write som text in the div, mark it and then hit "Bold" the span should show `"true"/"false"` or `true/false`. I don't really care if its as a string or a boolean as I can convert it later.