When an event is triggered on an element, say a link, any event handler that is attached to this specific element will be allowed to handle the event first. In addition to telling the browser to not do the default action whenever the event occurs, an event handler can also stop the propagation of an event. It allows you, for example, to have a link ( ) for which the user does not go to its href on a click event.
You’ll know the ability to prevent the default action usually taken by the browser ( preventDefault()). How can it be that you are listening for an event, but don’t catch it? That’s because any event handler has the option of doing several things with an event. We had to figure out what the problem was, and came up with a solution that allows you to catch any events that happen on your site, no matter how they are handled by any custom JavaScript. At some point, we noted that we didn’t quite catch all events. The client side script component of Ghostlab is listening for all sorts of events that happen, tries to catch them, and replicate them to all the other clients. A central component is the replication of events across clients – when the user clicks on a button, scrolls, or enters text into a form field on one client, we have to make sure that the very same thing happens on all others. In essence, it syncs any number of clients that view a website and makes it easy to go through that site and make sure it works great and looks good on all viewports and platforms. We have been developing Ghostlab, a tool for cross-device and cross-browser testing your websites. I asked them about how the heck it does that when there is so much that could interfere. Click somewhere on one page, that same click happens on the others. Scroll one page, the others you are testing scroll. One of the things I’m very impressed Ghostlab can do is sync the events from one browser to all the others.
#Ghostlab review for mac
Ghostlab is cross-browser cross-device testing software for Mac and PC. The following is a guest post by Matthias Christen and Florian Müller from Ghostlab.
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