What does addEventListener mean?
The addEventListener() method allows you to add event listeners on any HTML DOM object such as HTML elements, the HTML document, the window object, or other objects that support events, like the xmlHttpRequest object.
How do you find the input value of change?
Use input change event to get the changed value in onchange event argument. If you bind using the two-way bind to value property, it will automatically change the value into the value property.
How do I trigger addEventListener?
addEventListener(“name-of-event”, function(e) { console. log(e. detail); // Prints “Example of an event” }); // Create the event var event = new CustomEvent(“name-of-event”, { “detail”: “Example of an event” }); // Dispatch/Trigger/Fire the event document. dispatchEvent(event);
What is return value of addEventListener?
Event listeners return nothing by default, but you can get data out of them in clever ways. This MDN article described 3 methods: Getting data into an event listener using “this”
What is false in addEventListener?
addEventListener(“click”, first, true); when clicking child element, first method will be called before second . By default, the useCapture flag is set to false which means you handler will only be called during event bubbling phase.
What is capturing and bubbling phase?
With bubbling, the event is first captured and handled by the innermost element and then propagated to outer elements. With capturing, the event is first captured by the outermost element and propagated to the inner elements.
How do you stop bubbles?
How to Stop Event Bubbling in Your Components
- Make sure to pass the event object as a parameter.
- Use the stopPropagation method on the event object above your code within your event handler function.
What is input type and value?
Definition and Usage The value attribute is used differently for different input types: For “button”, “reset”, and “submit” – it defines the text on the button. For “text”, “password”, and “hidden” – it defines the initial (default) value of the input field.