Javascript 交叉观察者去Bouncer

我正在使用来懒散地将图像加载到瓷砖上。 问题是我有几千块瓷砖，每一块上面都有一个图像，需要加载

以前，我使用滚动去抖动器仅在滚动停止时加载图像，这大大提高了性能

问题是如何将滚动去Bouncer与IntersectionObserver一起使用

一个解决方案是创建一个可见项的初步数组，并添加一个超时

 let timeoutLastEntities;

 new IntersectionObserver((entries) => {
     setTimeout(function(){ 
        timeoutLastEntities.add(entities);
      }, 3000);
      // debouncer logic
 }, { threshold: 0.5 }).observe(imageTileElements);

---

好的，我找到了一个菜谱，但仍然不太合适

private initializeLazyLoader() {
    this.observer = new IntersectionObserver(
        this.processLazyChanges,
        { threshold: [0.5] }
    );

    // When scroll is triggered
    this.registerIntersectionObserverEvent(this.nativeElement, 'scroll', 300);
}

processLazyChanges(changes: any) {
    changes.forEach((change: any) => {
        var container = change.target;
        $(container).css('border', '1px solid red');
        this.observer.unobserve(container);
    });
}

private registerIntersectionObserverEvent(element: any, event: any, debouncerTime: number) {
    Observable.fromEvent(element, event)
        .debounceTime(debouncerTime)
        .subscribe((event) => this.initializeObservers(event));
}

private initializeObservers(event: any) {
    Array.from(document.querySelectorAll('app-tile')).forEach((tile: any) => {
        this.observer.observe(tile);
    });
}

---

好的，我找到了一个菜谱，但仍然不太合适

private initializeLazyLoader() {
    this.observer = new IntersectionObserver(
        this.processLazyChanges,
        { threshold: [0.5] }
    );

    // When scroll is triggered
    this.registerIntersectionObserverEvent(this.nativeElement, 'scroll', 300);
}

processLazyChanges(changes: any) {
    changes.forEach((change: any) => {
        var container = change.target;
        $(container).css('border', '1px solid red');
        this.observer.unobserve(container);
    });
}

private registerIntersectionObserverEvent(element: any, event: any, debouncerTime: number) {
    Observable.fromEvent(element, event)
        .debounceTime(debouncerTime)
        .subscribe((event) => this.initializeObservers(event));
}

private initializeObservers(event: any) {
    Array.from(document.querySelectorAll('app-tile')).forEach((tile: any) => {
        this.observer.observe(tile);
    });
}