Making text/answer choices disappear/reappear in qualtrics

Question

I'm working on experiment about distractions. As part of the experiment, I need a question to appear on the screen for two seconds, disappear for two seconds, then reappear. Here's my shot at programming this in javascript.

Qualtrics.SurveyEngine.addOnload(function()
{

    function togglequestion() { 
        if(this.getQuestionDisplayed()) {
             this.questionContainer.style.display = 'none';
        } else {
             this.questionContainer.style.display = 'block';
        }
     };

    var a1 = setTimeout(togglequestion, 2000);
    var a2 = setTimeout(togglequestion, 4000);

});

I think the problem is either in the way I'm declaring my function, or the if statement. I'm not very experienced with javascript so any bit of help would be very appreciated!

the timeout function expects the delay in milliseconds, so try `setTimeout(togglequestion, 2000)`, also there's no need for a second timer — omma2289, Feb 25 '14 at 19:17
The current behavior is nothing happens. Which is why I believe the problem is either in the function declaration or the if statement. — user2900369, Feb 25 '14 at 19:26

score 2 · Answer 1 · answered Feb 25 '14 at 19:18

2

The second argument of the setTimeout function is a duration in milliseconds. Currently, the functions is called two times very quickly.

var a1 = setTimeout(togglequestion, 2000);
var a2 = setTimeout(togglequestion, 4000);

answered Feb 25 '14 at 19:18

Maxime Lorant

34,607
19
87
97

Whoops, small mistake when I was copying it over. Changing the times does not make it work though. – user2900369 Feb 25 '14 at 19:22

Making text/answer choices disappear/reappear in qualtrics

1 Answers1