jQuery: How do I use event.preventDefault() with custom events?

Question

How can I know in my triggering code that preventDefault has been called?

$(document).trigger(\'customEvent\', params);
if (/* ??? */)
    doDefault         


        

Answer 1

In case someone needs it, as I did. Important the 2nd constructor-parameter:

Pure JS:

var event = new CustomEvent("close", { "cancelable": true });
// now event listeners can prevent default behavior
element.onclose(event);
// or: element.dispatchEvent(event);

if (!event.defaultPrevented)
    defaultBehavior();