waitfor or Demo Demo Experiment Run Experiment

waitfor or Demo

Jaap Murre

Illustrates how to use the waitfor ... or statement to wait for several events at once. As soon as one occurs, processing of the script continues. It also illustrates how to style a button.

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var e, n, response,
    left = addblock(10,80,15,10).button("Yes"),
    right = addblock(75,80,15,10).button("No");

var esc = addblock(80,5,15,10).button("Quit","navigation","quit","quit_button")
              .style("background-color","bisque","#quit_button");


while (true) 
{
    n = randint(1,11);
    text(n + " is larger than 5");
    
    waitfor
    {
        e = left.await('click');
        response = "yes";
    } or {
        e = right.await('click');
        response = "no";
    } or {
        awaitkey('ESCAPE');
        break;
    } or {
        esc.await('click');
        break;
    } or {
        await(3000);
        text("Please, answer within 3 seconds");
        await(1500);
    }
    
    text("You clicked " + response);
    await(1000);
    clear();
}

text("Thanks!");
await(1000);
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