Which are properties of event object?Chọn đáp án đúng:type, target, optiontype, target, currentTargettype, target, scopetype, target, element

To determine the correct properties of an event object, we first need to understand what an event object typically contains in the context of web development, particularly when dealing with the Document Object Model (DOM) in JavaScript.

Common Properties of the Event Object

1. type: This property indicates the type of event that occurred (e.g., 'click', 'keydown').

2. target: This is the element that triggered the event.

3. currentTarget: This indicates the element that is currently handling the event. It can be different from the target if the event is bubbling.

4. optionType and scope: These are not standard properties of the event object in JavaScript.

5. element: This is vague and not standard as all event objects relate primarily to DOM elements via the target property.

Analyzing the Choices

• The options provided contain repeated segments and some misleading terms.
• The most valid properties of a standard event object based on this analysis are type, target, and currentTarget.

Conclusion

The correct properties of an event object would be:

• type
• target
• currentTarget

Thus, the accurate answer from the choices given would be: type, target, currentTarget.