???? ??? ??? ??/???? ???.

????? ??? ???! ? ?? ??? ?? ??? ???? ?? ?? ?, ? ??? ???? ?? ? ??? ???? ???? ?? ?? ????? ???. ?? ?? ?? ??? ????? StackOverflow? 2,600?? ???? ?????. "????" Medium ???????. AI ?? ???? ????? ?? ??? ??.

?????? ??? ????

?? ?? ??? ?? ?? ???. ?? 4? 30?, ?? ??? ???? ??? StackOverflow?? ??? ???? ?????. ??? ??? ???, ?? ???? ????, ??? ??????. ??? ??? ? ????

?? ? ????. ?? ?? ???????.

// Common StackOverflow solution for handling click outside
@Directive({
  selector: '[clickOutside]'
})
export class ClickOutsideDirective {
  @Output() clickOutside = new EventEmitter<void>();

  constructor(private elementRef: ElementRef) {
    // Looks innocent enough, right?
    document.addEventListener('click', this.onClick.bind(this));
  }

  onClick(event: any): void {
    if (!this.elementRef.nativeElement.contains(event.target)) {
      this.clickOutside.emit();
    }
  }
}

? ??? ?? ??? ??? ????. ????? ?????. ??? ?? ??? ???? ?? ? ?? ? ?? ??? ????.

1. ??? ?? - OnDestroy?? ??? ? ?
2. ?? ?? - ?? ????? ?? ?? ?? ???
3. ???? null ?? ??
4. ??? ???? ??? ????
5. ?? ????? ???? ????

AI ?? ??

AI ?? ???? ???? ??? ? ??? ??? ??? ???? ????. ?? ??? AI ?? ??? ??? ????.

@Component({
  selector: 'app-user-profile',
  template: `
    <div *ngIf="userProfile$ | async as user">
      <h1>{{ user.name }}</h1>
      <div>



<p>Looks clean, right? But there are subtle issues:</p>

<ol>
<li>No error handling</li>
<li>No loading state</li>
<li>No retry logic</li>
<li>No type safety</li>
<li>No service layer</li>
<li>Uses old template syntax</li>
</ol>

<h2>
  
  
  The Hidden Costs
</h2>

<p>When we blindly copy-paste code, we're essentially taking on technical debt without realizing it. Here's what we're really risking:</p>

<h3>
  
  
  Security Vulnerabilities
</h3>

<p>That innocuous-looking utility function might have security implications you haven't considered. I once saw a copied authentication helper that stored sensitive tokens in localStorage without encryption.</p>

<h3>
  
  
  Performance Issues
</h3>

<p>Copy-pasted code often comes with hidden performance costs. A recent project I reviewed had three different versions of a debounce function, each implementing slightly different timing logic and all running simultaneously.</p>

<h3>
  
  
  Maintenance Nightmares
</h3>

<p>Every piece of code you don't understand is a future bug waiting to happen. When that copied code breaks six months from now, you'll spend more time understanding it than you saved by copying it.</p>

<h2>
  
  
  The Right Way to Learn from Others' Code
</h2>

<p>Don't get me wrong - learning from other developers' code is fantastic. But there's a right way to do it:</p>

<ol>
<li><p><strong>Understand Before Implementing</strong><br>
Read the code line by line. Understand what each part does. If you can't explain it to a colleague, you shouldn't be using it.</p></li>
<li><p><strong>Type Everything</strong><br>
In Angular v18, we have amazing type safety features. Use them! Here's how that earlier example should look:<br>
</p></li>
</ol>

<pre class="brush:php;toolbar:false">interface ClickOutsideEvent extends MouseEvent {
  target: HTMLElement;
}

@Directive({
  selector: '[clickOutside]'
})
export class ClickOutsideDirective implements OnDestroy {
  @Output() clickOutside = new EventEmitter<void>();
  private readonly destroy$ = new Subject<void>();

  constructor(private elementRef: ElementRef<HTMLElement>) {
    fromEvent<ClickOutsideEvent>(document, 'click')
      .pipe(
        takeUntil(this.destroy$),
        filter(event => event.target instanceof HTMLElement),
        filter(event => !this.elementRef.nativeElement.contains(event.target))
      )
      .subscribe(() => this.clickOutside.emit());
  }

  ngOnDestroy(): void {
    this.destroy$.next();
    this.destroy$.complete();
  }
}

1. ?? ?? ??????
   ??? ?? ???? ??? ? ??? ??? ??? ???? ?? ????.

2. ??? ?? ??
   ?? ????? ?? ??? ???? ?? ??? ??? ?? ?? ??? ???? ???? ????. ??? ???? ?? ??? ??? ? ????.

??? ??? ?

?? ?? ????? ?? ????? ?? ?? ?? ?????. ?? ????? ???? ??? ?????.

• ??? ?? ??? ???? ?? ??
• ?? ? ??? ??? ?? ??
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• ?? ?? ??? ???? ? ??? ???
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??? ???

?????? ??? ?? ??? ?? ????? ? ??? ?? ??? ????? ?? ??? ??? ? ????. Code Quality Labs??? ?? ?? ?? ??? ???? ??? ???? ??? ??? ? ??? ?? ???? ????? ?? ?? ???? ?????.

??? ???? ?????? www.frontendreviews.com? ???? ?? ? ???? ???? ?? ??? ?? ????? ??? ???? ? ??? ??? ??? ?????.

?????: ?? ? ????? ??? ??? ??? ???? ? ??? ???? ??? ????. ?? ?? ??? ???? ? ?????.

??? ??? ?? ???? ?? ???? ?????? ?? ??? ??? ???. ?? ?? ?? ??? ?? ?? ???! ?

????? #webdev #angular #react #????? #???? #typescript

? ??? ???? ??? ??? ??/???? ????.? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!