Rxjs- pluck

将每个source value映射到其指定的嵌套属性。

Parameters

Example

将每次单击映射到单击的目标元素的tagName

import { fromEvent, pluck } from 'rxjs';

const clicks = fromEvent(document, 'click');
const tagNames = clicks.pipe(pluck('target', 'tagName'));

tagNames.subscribe(x => console.log(x));