stopImmediatePropagation () طريقة الحدث

var x = document.getElementById("myBtn");
x.addEventListener("click", myFunction);
x.addEventListener("click", someOtherFunction);

function myFunction(event) {
    alert ("Hello World!");
    event.stopImmediatePropagation();
}

// This function will not be executed
function someOtherFunction() {
    alert ("I will not get to say Hello World");
}