Method

#scroll([selector], options)

• selector - optional selector to scroll a nested element

• options - scroll options

  • left - amount in pixels to scroll left
  • top - amount in pixels to scroll top
  • x - alias for left
  • y - alias for top
  • wheel - triggers a wheel event when true (default false)
  • frequency - how many times to trigger the scroll event (default 1)

The interactor.scroll() method will trigger a scroll event on the interactor's element and scroll the specified distance when the interactor is run. When given a selector, it will trigger a scroll event and scroll a nested element instead. It returns a new instance of the interactor with the action added to it's queue.

At least one of the directions is required when scrolling, but both may also be provided. When wheel is true a wheel event is triggered before the scroll event and is given an opportunity to cancel the scroll event. The frequency option determines how many times over the course of scrolling to trigger the scroll event. For example, given a top value of 100 and a frequency of 5 the scroll event will be triggered once every 20px.

import { Interactor } from 'interactor.js';

await new Interactor('.container').scroll({ top: 100 });
await new Interactor('.wrapper').scroll('.container', { top: 100 });

await new Interactor('.container').scroll({
  top: 100,
  wheel: true,
  frequency: 10
});

Action

scroll(selector, options) => Interactor

• selector - element selector to blur
• options - scroll options (see above)

The scroll() action returns an interactor which will trigger a scroll event on the specified element and scroll the specified distance. The returned interactor can be run by itself, or used when composing a custom interactor.

See the interactor method above for details on the various options.

import interactor, { scroll } from 'interactor.js';

await scroll('.container', { top: 100 });

@interactor class PageInteractor {
  scrollDown100 = scroll('.container', { top: 100 });
  scrollDownBy = top => scroll('.container', { top });
}

await new PageInteractor().scrollDown100();
await new PageInteractor().scrollDownBy(500);