Category: Events

Custom Events The custom events in JavaScript define and handle custom interactions or signals within an application. They establish a communication mechanism between various sections of your code: one part can notify others about specific occurrences or changes; thus enhancing the functionality of your program. Typically, users utilize custom events in conjunction with the Event…

Event Capturing Event capturing in JavaScript is the initial phase in the event propagation model where the event travels from the root of the document tree down to the target element. During this phase, the browser captures the event on the ancestors of the target element before reaching the target itself. Event capturing and event…

Event Bubbling Event bubbling is a concept in JavaScript that refers to the order in which events are handled as they propagate through the DOM (Document Object Model) hierarchy. When an event occurs on a particular element, such as a click or a keypress, it can trigger handlers not only on that specific element but…

Event delegation in JavaScript is a technique that allows us to attach a single event listener to a parent element, and then use the event object to determine which child element triggered the event. This way, we can handle multiple events with a single event listener, and avoid adding too many event listeners to the…

JavaScript window events are actions that occur when the user does something affecting the entire browser window, like loading, resizing, closing, or moving the window. The most common window event is simply loading the window by opening a particular web page. This event is handled by the onload event handler. Developers can use JavaScript to…

Form Events The form events in JavaScript are events that are associated with HTML forms. These events are triggered by user actions when interacting with form elements like text fields, buttons, checkboxes, etc. Form events allow you to execute JavaScript code in response to these actions, enabling you to validate form data, perform actions on…

The keyboard events in JavaScript provide a way to interact with a web page or application based on the user’s keyboard input. These events allow developers to capture and respond to various keyboard actions, such as key presses, key releases, and character inputs. The primary keyboard events in JavaScript include keydown, keypress, and keyup. Common…

JavaScript mouse events allow users to control and interact with web pages using their mouse. These events trigger specific functions or actions in response to user clicks, scrolls, drags, and other mouse movements. To handle mouse events in JavaScript, you can use the addEventListener() method. The addEventListener() method takes two arguments: the event type and…

The JavaScript addEventListener() method is used to attach an event handler function to an HTML element. This allows you to specify a function that will be executed when a particular event occurs on the specified element. Events are a specific occurrence or action like user clicks, keypress or page loads. The browser detects these events and triggers…

The DOM events are actions that can be performed on HTML elements. When an event occurs, it triggers a JavaScript function. This function can then be used to change the HTML element or perform other actions. Here are some examples of DOM events: You can use the event handlers or addEventListener() method to listen to…