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How to detect focusout on parent div not on child div in Angular4


By : Rosario Fares
Date : October 18 2020, 06:10 AM
this one helps. It is easier to use Angular's Reactive Forms for this:
code :
<input type="text" [formControl]="inputControl">

<select [formControl]="selectControl">
  <!-- ... -->
</select>
import { FormControl } from '@angular/forms';

export class MyComponent {
  inputControl = new FormControl(null, { updateOn: 'blur' });
  selectControl = new FormControl(null, { updateOn: 'change' });

  ngOnInit() {
    inputControl.valueChanges.subscribe(value => {
      // ...
    });
    selectControl.valueChanges.subscribe(value => {
      // ...
    });
  }
}


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Angular4 / Child element not firing parent (click) event


By : Carlos Manuel Delgad
Date : March 29 2020, 07:55 AM
seems to work fine Use $event.currentTarget instead of $event.target
This way you will get the element to which the event handler has been attached.

Not able to pass data from parent to child component in angular4


By : BabyProgrammer
Date : March 29 2020, 07:55 AM
Any of those help ,
code :
[title]="title goes here"
[title]="'title goes here'"
title="title goes here"

Populate multiple placeholders in parent from child component in Angular4


By : darklk
Date : March 29 2020, 07:55 AM
hope this fix your issue Consider building a service that has a property for your page header.
The ParentComponent can then access the service to bind to the property.
code :
   import { Injectable } from '@angular/core';

    @Injectable() 
    export class HeaderService {
      headerText: string; 
    }
export class ParentComponent {

  get header():string { 
    return this.headerService.headerText; 
  } 

  constructor(public headerService: HeaderService) { } 
}
<header>
    ...
    <div>{{ header }}</div>
</header>
<router-outlet></router-outlet>
export class ChildComponent {

  constructor(public headerService: HeaderService) { 
     this.headerService.headerText = ''; // <- Header text here
  } 
}

Angular4 routing parent > child : Hook that runs when navigating back to parent?


By : ben
Date : March 29 2020, 07:55 AM
this one helps. Are they parent and child components or parent and child routes?
When they are parent and child components, then the child component's selector is defined within the parent component's template. When that is the case, you can use @Output to communicate between the parent and the child.
code :
this.route.params.subscribe(param => console.log(param));

Angular4 Passing data from parent to child, emit not working


By : Mihai COJAN
Date : March 29 2020, 07:55 AM
wish help you to fix your issue That's because Angulars EventEmitter has emit method to emit value. Look at docs
It should be
code :
this.passDataToViewPdf.emit(event);
@Input() template;
@Input() set pdf(newPdf) {
   this._pdf = newPdf;
   this.handleEvent(newPdf);
};
private _pdf;



public handleEvent(event) {
    // process your data
}
ngOnInit() { this.template = // get data from handleEvent}
<child-component [pdf]="pdfValueInParent"></child-component>
onRowSelect(event): void {
      this.pdfValueInParent = event;
      this.router.navigate(['/report-view-pdf', localStorage.getItem('siteId')]);
  }
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