javascript custom events with data
//Listen for the event
window.addEventListener("MyEventType", function(evt) {
alert(evt.detail);
}, false);
//Dispatch an event
var evt = new CustomEvent("MyEventType", {detail: "Any Object Here"});
window.dispatchEvent(evt);event listener javascript
const element = document.querySelector(".class__name");
element.addEventListener("click", () => {
console.log("clicked element");
});event listener javascript
document.querySelector('div').addEventListener('click', () => {
console.log('div clicked');
});js add event listener
function eventHandler(event) {
if (event.type == 'fullscreenchange') {
/* gestire un interruttore a schermo intero */
} else /* fullscreenerror */ {
/* gestire un errore di commutazione a schermo intero */
}
}event listener javascript
//DOM Level 2 Event Listener (Advanced technique to call an event)
document.getElementById("btn2").addEventListener('click', () => {
alert("hello world");
}, false);
//our third param of DOM Level 2 Event Listener
// false = event trigger from bottom to top(bubbling phase)
// true = event trigger from top to bottom (capturing phase)
//TRADITIONAL DOM EVENT HANDLERS (very old)
function show_alert() {
alert("hello world");
}
document.getElementById("btn1").onclick = show_alert;Copyright © 2021 Codeinu
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