Event Handling in Javascript 🚀
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✦ In JavaScript, an event is an action or occurrence that can be detected by your script.
✦ Event handling is the process of responding to events in your script.
✦ Event handling is the process of responding to events in your script.
✦ There are many different events that you can handle in JavaScript, such as clicking a button, hovering over an element, or submitting a form.
✦ To handle an event in JavaScript, you can use an event listener.
✦ To handle an event in JavaScript, you can use an event listener.
✦ Event listener
• An event listener is a function that listens for a specific event to occur, and then executes a callback function when the event is detected.
• For example, to handle a button click event, you might do something like this :
• An event listener is a function that listens for a specific event to occur, and then executes a callback function when the event is detected.
• For example, to handle a button click event, you might do something like this :
• In this example, the addEventListener method is used to listen for the click event on the button element.
• When the button is clicked, the callback function is executed, which logs a message to the alert.
• When the button is clicked, the callback function is executed, which logs a message to the alert.
✦ We can also pass an optional third argument to addEventListener, which is an object containing options for the event listener.
✦ For example, We can use the once option to specify that the event listener should only be triggered once, rather than every time the event occurs.
✦ For example, We can use the once option to specify that the event listener should only be triggered once, rather than every time the event occurs.
✦ There are many other options and techniques for event handling in JavaScript.
✦ You can find more information in the documentation for the addEventListener method and the Event object.
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✦ You can find more information in the documentation for the addEventListener method and the Event object.
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