JavaScript or Qt way to update an HTML select box value in webkit?

[Pirate]

So I have the following HTML and am trying to change which item is selected.

<select name="coolselectbox">
   <option value="default" selected="selected">---</option>
   <option value="something">Something</option>
   <option value="something-else">Something Else</option>
</select>

<select name="coolselectbox">
   <option value="default" selected="selected">---</option>
   <option value="something">Something</option>
   <option value="something-else">Something Else</option>
</select>

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Here's what I've tried:

QWebElement defaultOpt = 
       this->page()->mainFrame()->findFirstElement("option[value=default]");
 
QWebelement somethingOpt = 
       this->page()->mainFrame()->findFirstElement("option[value=something]");
 
defaultOpt.removeAttribute("selected");
somethingOpt.setAttribute("selected", "selected");

QWebElement defaultOpt = 
       this->page()->mainFrame()->findFirstElement("option[value=default]");

QWebelement somethingOpt = 
       this->page()->mainFrame()->findFirstElement("option[value=something]");

defaultOpt.removeAttribute("selected");
somethingOpt.setAttribute("selected", "selected");

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And then also:

QWebElement selectBox = 
       this->page()->mainFrame()->findFirstElement("select[name=coolselectbox]");
 
selectBox.setAttribute("value", "something-else");

QWebElement selectBox = 
       this->page()->mainFrame()->findFirstElement("select[name=coolselectbox]");

selectBox.setAttribute("value", "something-else");

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However neither of these seems to get the job done, at least visually, however I may have overlooked something.

Does anyone know a Qt solution, or is there perhaps some JavaScript snippet I can run to do this? Also what about a similar approach for radio buttons, which are essentially the same thing?

[GreyHound]

I've the exact same problem.

I also tried using ...

selectBox.setAttribute("value", "something-else");

selectBox.setAttribute("value", "something-else");

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... which worked fine at inputs. Lost now.

---

Added after 19 minutes:

element.evaluateJavaScript("this.selectedIndex = 2");

element.evaluateJavaScript("this.selectedIndex = 2");

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that works