I have a serious of questions that are all presented on different pages. On each page, I have also added a "Timing" item to display a countdown clock. If the countdown clock reaches zero, I want an error message to pop up. Currently I am using the following code for each Question Javascript to show an error message after 4 seconds:
Qualtrics.SurveyEngine.addOnload(function()
{
/*Place your JavaScript here to run when the page loads*/
});
Qualtrics.SurveyEngine.addOnReady(function()
{
setTimeout(function(){
alert("Time is up. Please choose an answer and move to the next question.");
}, 4000);
});
Qualtrics.SurveyEngine.addOnUnload(function()
{
/*Place your JavaScript here to run when the page loads*/
});
This code displays an error message after 4 seconds if I stay on a question. However, if I advance quicker than 4 seconds, the timeout error message carries over and will appear in the middle of the countdown on the next page (e.g., If I advance after 3 seconds, the next question will pop up an error message when the countdown has only gone down by 1 second). Do you have advice on how to avoid this carry over? Thank you for your help!
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Hi @iadams,
originally I thought I'll solve it using clearTimeout function easily. However, I didn't manage to make this function work in Qualtrics. In another compiler, the following code worked, but in Qualtrics not.
<button onclick="myStopFunction()">Stop the alert</button>
<script>
var myVar;
myVar = setTimeout(function(){ alert("Hello"); }, 3000);
function myStopFunction() {
clearTimeout(myVar);
}
</script>
So if some else won't manage to solve your problem, you could display your error message somewhere in the page instead of in the pop-up window:
1) Add following HTML element to the place where the future error message will be:` <p id="demo"> </p>` (note that there should be at least a space inside since Qaultrics removes empty elements)
2) Add folowing JavaScript to the question which contains the HTML element.
Qualtrics.SurveyEngine.addOnReady(function()
{
setTimeout(function(){ document.getElementById("demo").innerHTML = "ERROR"; }, 3000);
});
One more tip: In this verion, the user have unlimited time to answer the question after the error message appears. If you don't want this, you could use another timer containing `this.clickNextButton();` to autoadvance the page.
originally I thought I'll solve it using clearTimeout function easily. However, I didn't manage to make this function work in Qualtrics. In another compiler, the following code worked, but in Qualtrics not.
<button onclick="myStopFunction()">Stop the alert</button>
<script>
var myVar;
myVar = setTimeout(function(){ alert("Hello"); }, 3000);
function myStopFunction() {
clearTimeout(myVar);
}
</script>
So if some else won't manage to solve your problem, you could display your error message somewhere in the page instead of in the pop-up window:
1) Add following HTML element to the place where the future error message will be:` <p id="demo"> </p>` (note that there should be at least a space inside since Qaultrics removes empty elements)
2) Add folowing JavaScript to the question which contains the HTML element.
Qualtrics.SurveyEngine.addOnReady(function()
{
setTimeout(function(){ document.getElementById("demo").innerHTML = "ERROR"; }, 3000);
});
One more tip: In this verion, the user have unlimited time to answer the question after the error message appears. If you don't want this, you could use another timer containing `this.clickNextButton();` to autoadvance the page.
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