Calling back a keyboard binding javascript function

Question

Hello!

I am currently writing a survey where I want to use the spacebar to advance, using the following code:

Qualtrics.SurveyEngine.addOnload(function()  {
    $('NextButton').hide();         
    document.on("keydown", function(e) {
         if (e.keyCode === 32) $('NextButton').click();
    });
});

The issue is, once I enter it into one question, it applies for the rest of the questions too and becomes an issue when I need respondents to type in a response. If a respondent hits the space bar when typing out their response, they will advance to the end of the survey.

With that said, my question is: How do I unbind the space bar after the respondent is finished with the multiple choice section? I am not very well versed in JavaScript, and while I did attempt to write a callback script for the "Upon page exit" section, I couldn't get it to work.

Thanks!

TomG · Answer

I believe that in this instance .on is from prototypejs.  If it is, you could assign it to a handler and then use .stop():```var handler = document.on("keydown", function(e) {    if (e.keyCode === 32) {        handler.stop();        $('NextButton').click();});```I recommend using jQuery's .on and .off instead.

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