Menu
I have an @Output labelClicked = new EventEmitter(); and I want to know if this event has been binded in the parent component (with <myComponent (labelClicked)="open($event)"></myComponent>) so I can style my component with a cursor: pointer.
Is this possible?
655
We can get child component values in the parent component by creating a reference to the child component using the @ref directive in the Parent component. Using the reference instance, you can access the child component values in the parent.
The @Input() decorator in a child component or directive signifies that the property can receive its value from its parent component.
Input is used to receive data in whereas Output is used to send data out. Output sends data out by exposing event producers, usually EventEmitter objects. by the way, I will produce and send data out via the onChange property.
Solution :
<span class="label" [class.clickable]="labelClicked.observers.length > 0">{{label}}</span>
( css : .clickable { cursor: pointer; } )
Explaination :
As per my understand you want to detect if the event handler attached with the component or not. if it's attached you want to add some class else no need to attach the class.
i just did the quick check actually angular @output variable hold the info about how many handler attached with the event
in that above image i have attached handler with submit event and close event dont have any handler attached. so you can check this array and assign class using render
119
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
