What scenarios can event modifiers in vue be used for?

Vue.js event modifiers are used to add specific behaviors, including: preventing default behavior (.prevent) stopping event bubbling (.stop) one-time event (.once) capturing event (.capture) passive Event listening (.passive) adaptive modifier (.self) key modifier (.key)

Vue.js event modifier application Scenario

In Vue.js, event modifiers are a special syntax used to add specific behaviors to element event handlers. They allow developers to simplify event handling and make code simpler and more efficient.

Prevent default behavior (.prevent)

• Prevent the default behavior of an element, such as form submission or link jump.
• Prevents accidental submission of forms or prevents href link jumps.

Stop event bubbling (.stop)

• Prevents events from bubbling up to ancestor elements.
• Causes the event to be handled only on the element that triggered it.

One-time events (.once)

• Handle the event only once and then remove the event listener from the element.
• Can be used to initialize one-time components or unsubscribe from events that are no longer needed.

Capture events (.capture)

• Capture events starting from the root element during event bubbling.
• Allows developers to handle the early stages of events, before child elements are processed.

Passive event listening (.passive)

• Enable browser optimization to improve page scrolling and responsiveness.
• Prevent event handlers from preventing page scrolling and other browser optimizations.

Adaptive modifier (.self)

• Only handles events triggered by the element itself, excluding events triggered by child elements.
• Can be used to prevent events from accidentally bubbling between nested elements.

Key modifier (.key)

• In the event handler function, provide an event object whose key property contains the key that triggered the event.
• Conveniently detect specific keyboard input, such as carriage return or space bar.

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