Getting to know how much scrolling happened

moda20 · August 28, 2018, 11:10pm

hey !

Is there anyway of finding how much scrolling has happened since the last time a scroll event was fired? I am using ionic 4 beta 4.0.6, in the old version (ionic 3) there was the scrollTop property which we could get from subscribing to IonScroll, but I can’t find a way to reach it right now on the new version.

I did try to subscribe to IonScroll event via the content (as in the beta docs) but that doesn’t export the property scrollTop.

reedrichards · August 29, 2018, 6:01am

maybe Content.getScrollElement() or something else from Content?

github.com

ionic-team/ionic-framework/blob/1d46973785aa204e13a44a740c9df75751d9f88d/core/src/components/content/content.tsx

import { Component, Element, Event, EventEmitter, Listen, Method, Prop, QueueApi } from '@stencil/core';

import { Color, Config, Mode, ScrollBaseDetail, ScrollDetail } from '../../interface';
import { createColorClasses } from '../../utils/theme';

@Component({
  tag: 'ion-content',
  styleUrl: 'content.scss',
  shadow: true
})
export class Content {

  private watchDog: any;
  private isScrolling = false;
  private lastScroll = 0;
  private queued = false;
  private cTop = -1;
  private cBottom = -1;
  private scrollEl!: HTMLElement;

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