Correct Answer: A, C

To apply a knockout binding to a

to run a function, onClick(), when it's clicked, the developer can use either of the following solutions:

: This solution will use the click binding to execute the onClick() function as an expression when the

is clicked. The function will be called with the current binding context as the first parameter and the event object as the second parameter.

: This solution will use the click binding to execute the onClick function as a reference when the

is clicked. The function will be called with the current binding context as the first parameter and the event object as the second parameter.

The following solutions are not valid and will not work:

: This solution will use the virtual element syntax to apply the click binding, but it will pass a string literal instead of a function expression or reference. This will cause an error, as the click binding expects a function value.

: This solution will use a custom attribute instead of a data-bind attribute to apply the click binding. This is not supported by knockout and will not have any effect.

Question #4

An Adobe Commerce developer was asked to customize a JavaScript component which is written as a function. How would the developer extend the native JavaScript function?

AOption A

BOption B

COption C

Reveal Solution

Correct Answer: A

To customize a JavaScript component that is written as a function, the developer can use option A. This option will use the prototype property of the function to extend its functionality and add new methods or properties. For example:

function Component() { // Component logic }

Component.prototype.customMethod = function() { // Custom method logic };

This will create a new method called customMethod on the prototype of the Component function, which can be accessed by any instance of the Component object. The developer can also override existing methods or properties on the prototype by reassigning them with new values.

Option B is not correct because it will not extend the native JavaScript function, but create a new function that wraps the original function. This will not allow the developer to access or modify the properties or methods of the original function. Option C is not correct because it will not extend the native JavaScript function, but create a new object that inherits from the original function. This will not allow the developer to customize the original function itself, but only its instances.

Question #5

Which Ul component property is used for cross tracking property changes?

Aexports

Blistens

Clinks

Reveal Solution

Correct Answer: B

The listens property is used for cross tracking property changes in the UI component. The listens property defines the dependencies between the properties of different UI components. It allows one UI component to listen to the changes of another UI component's property and react accordingly. For example, the listens property can be used to update the value of a text field based on the selection of a dropdown menu

Adobe AD0-E720 Exam

Free Adobe AD0-E720 Exam Actual Questions

The questions for AD0-E720 were last updated On Apr. 25, 2024