Hi LimeSurvey Community!

Can I make a link click to a website mandatory?

I need my participants to view a couple of websites before continuing with my survey. I have already included the links in the question content but ideally I would like them not to be able to move on to the next question if the links have not been clicked... (the icing on the cake would be to know how much time they actually spend on the external links :silly: )

I appreciate any advice

With Javascript you should be able to identify if a link was clicked or not. Let's see if one of the Javascript Experts here will come up with something.

But to know how long they have been on the website I think is basically impossible.

I doing it with a very old version of limesurvey :
User see the website in iframe
The question was : find this button
With javascript : tracking the click inside iframe.

But the survey and the website are on same domain (else security of browser disable all tracking part).

It take me a long long time …

Yea, if the same domain, things are easier. Now I assumed that those are external websites to be opened. But who knows.

In several surveys, I have used the window.postMessage() method to record clicks and other actions in an iframe sourced on a remote server. This works around cross-origin issues.

- developer.mozilla.org/en-US/docs/Web/API/Window/postMessage

Basically, you program events in the iframe that trigger messages to the top frame. These can then be detected and used to manipulate the survey elements.

The only caveate is that you have to have access to the source of the iframe to load those events.

In most of my use-cases, we were asking for feedback on app prototypes loaded in iframes so we had the prototype developers insert the message events for us.