Event binding with parentheses in Angular - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to bind a click event to the button.

Angular

<button [1]="onClick()">Click me</button>

Drag options to blanks, or click blank then click option'

A[click]

B(click)

C{click}

D<click>

Attempts:

3 left

💡 Hint

Common Mistakes

Using square brackets instead of parentheses for event binding.

Using curly braces or angle brackets which are invalid.

In Angular, event binding uses parentheses around the event name, like (click).

2fill in blank

medium

Complete the code to call the submitForm method when the form is submitted.

Angular

<form [1]="submitForm()">...</form>

Drag options to blanks, or click blank then click option'

A{submit}

B[submit]

C(submit)

D<submit>

Attempts:

3 left

💡 Hint

Common Mistakes

Using square brackets which are for property binding.

Using curly braces or angle brackets which are invalid.

The submit event is bound using parentheses: (submit).

3fill in blank

hard

Fix the error in the event binding to call handleClick on button click.

Angular

<button [1]="handleClick()">Click</button>

Drag options to blanks, or click blank then click option'

A(click)

B<click>

C{click}

D[click]

Attempts:

3 left

💡 Hint

Common Mistakes

Using property binding brackets instead of event binding parentheses.

Omitting parentheses after the method name.

The event binding must use parentheses and the method call should include parentheses: (click)="handleClick()". Here, the blank is for the event name with parentheses.

4fill in blank

hard

Fill both blanks to bind a keydown event and call onKeydown method.

Angular

<input [1]="[2]()">

Drag options to blanks, or click blank then click option'

A(keydown)

BonKeydown

C(keyup)

DhandleKey

Attempts:

3 left

💡 Hint

Common Mistakes

Using the wrong event name like keyup.

Using a method name that doesn't match the event.

The event name keydown is bound with parentheses: (keydown), and the method called is onKeydown().

5fill in blank

hard

Fill all three blanks to bind a mouseenter event, call onMouseEnter, and pass the event object as $event.

Angular

<div [1]="[2]([3])">Hover me</div>

Drag options to blanks, or click blank then click option'

A(mouseenter)

BonMouseEnter

C$event

D(mouseover)

Attempts:

3 left

💡 Hint

Common Mistakes

Using (mouseover) instead of (mouseenter).

Not passing the event object $event.

The event binding uses (mouseenter), calls the method onMouseEnter, and passes the event object $event.