谷歌浏览器：同时具有更多元素的“平滑”scrollIntoView() 不起作用答案

【问题标题】：Google Chrome: Simultaneously 'smooth' scrollIntoView() with more elements doesn't work谷歌浏览器：同时具有更多元素的“平滑”scrollIntoView() 不起作用
【发布时间】：2020-08-24 22:52:32
【问题描述】：

在 Google Chrome 中，element.scrollIntoView() 和 behavior: 'smooth' 不能同时在多个容器上运行。一旦在一个容器上触发平滑滚动，第二个容器就会停止滚动。在 Firefox 中，这个问题不存在；两个容器可以同时滚动。

我的解决方法是使用behavior: 'instant'，但我喜欢使用behavior: 'smooth' 以获得更好的用户体验。

示例

Here 是一个使用 Angular 的笨蛋

html

<p>
  In Google Chrome element.scrollIntoView() with behavior 'smooth' doesn't work, if scrolling more containers at the same time.
  Shwon in case 'All Smooth (200ms sequence)' the container stopps scrolling.
  <br>
  <br> In Firefox all works.
</p>

<div class="row mb-1">
  <div class="col">
    <button (click)="reset()" type="button" class="btn btn-secondary">Reset</button>
  </div>
</div>

<div class="row mb-1">
  <div class="col">
    <button (click)="scrollAllInstant()" type="button" class="btn btn-secondary">All Instant</button>
    <small class="text-success">Works</small>
  </div>
</div>

<div class="row mb-1">
  <div class="col">
    <button (click)="scrollAllSmooth()" type="button" class="btn btn-secondary">All Smooth (simultaneously)</button>
    <small class="text-danger">Only one container is scrolled</small>
  </div>
</div>

<div class="row mb-1">
  <div class="col">
    <button (click)="scrollAllSmoothSequenced()" type="button" class="btn btn-secondary">All Smooth (200ms sequence)</button>
    <small class="text-danger">Only last container is scrolled to 85 - Others will stop, if next container is triggered</small>
  </div>
</div>

<div class="row">
  <div *ngFor="let container of containers, let index = index" class="col">

    <button (click)="scrollSingelContainer(container)" type="button" class="btn btn-secondary mb-1">Single Container Smooth</button>
    <small class="text-success">Works</small>

    <div class="card bg-light mb-3" style="height: 500px;  max-width: 18rem;">
      <div class="card-header">Container {{ container }}</div>
      <div (scroll)="onScroll(container)" class="card-body" style="overflow-y: scroll;">
        <p *ngFor="let number of content" [attr.id]="container + '_' + number" class="card-text" [class.text-danger]="number == 85">{{ number }}</p>
      </div>

    </div>
  </div>
</div>

打字稿

export class App {
  name: string;

  containers = [0, 1, 2]
  content = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100]

  constructor() {
    this.name = `Angular v${VERSION.full}`
  }

  private scroll(container: number, row: number, behavior: string) {
    let element = document.getElementById(container + '_' + row);
    element.scrollIntoView({
      behavior: behavior,
      block: 'start',
      inline: 'nearest'
    });
  }

  reset() {
    this.containers.forEach(container => {
      this.scroll(container, 1, 'instant');
    });
  }

  scrollSingelContainer(container: number) {
    this.scroll(container, 85, 'smooth');
  }

  scrollAllInstant() {
    this.containers.forEach(container => {
      this.scroll(container, 85, 'instant');
    });
  }

  scrollAllSmooth() {
    this.containers.forEach(container => {
      this.scroll(container, 85, 'smooth');
    });
  }

  scrollAllSmoothSequenced() {
    this.containers.forEach(container => {
      setTimeout(() => {
        this.scroll(container, 85, 'smooth');
      }, 200 * container);
    });
  }

  onScroll(container: number) {
    console.log('Scroll event triggerd by container ' + container);
  }
}

【问题讨论】：

我打开了bugs.chromium.org/p/chromium/issues/detail?id=1121151

标签： javascript google-chrome js-scrollintoview

【解决方案1】：

这里提出了一个类似的问题：scrollIntoView() using smooth function on multiple elements in Chrome，但答案并不令人满意，因为它指出，这不是错误，而是。

但这似乎是一个错误，并且已经在 Chromium 错误列表中报告了：

为了使用scrollIntoView（至少对某些元素）同时平滑滚动多个元素，我们需要等待 Chromium 团队的修复。

另一种方法是使用scrollTo，它也适用于 Chrome 中的多个元素。请参阅本示例中的场景 5：https://jsfiddle.net/2bnspw8e/8/。

缺点是您需要获取要滚动到视图中的元素的下一个可滚动父级（参见https://stackoverflow.com/a/49186677 示例），计算将父级滚动到元素所需的偏移量并调用@ 987654330@.

【讨论】：