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re: How to Programmatically Trigger 'Click' Event in Angular 4 & 5 VIEW POST

FULL DISCUSSION
 

Instead of getElementById there's a good way of controlling the elements on the template by using the @ViewChild Directive. (Angular 8)

in the template adding a local reference to the button: (#photoInputButton)

in the component
adding the @ViewChild directive referencing the photoInputButton:

@ViewChild('photoInputButton', {static: false}) photoInputButton: ElementRef;
//{static: true} => only if it's being used in the ngOnInit phase

Now you have an ElementRef - you can trigger the click:

this.photoInputButton.nativeElement.dispatchEvent(new MouseEvent('click'));

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