RxJS之过滤操作符 ( Angular环境 )

import { Component, OnInit } from ‘@angular/core‘;
import { range } from ‘rxjs/observable/range‘;
import { take } from ‘rxjs/operators/take‘;

@Component({
  selector: ‘app-filter‘,
  templateUrl: ‘./filter.component.html‘,
  styleUrls: [‘./filter.component.css‘]
})
export class FilterComponent implements OnInit {

  constructor() { }

  ngOnInit() {
    range(100, 10)
      .pipe(take(5))
      .subscribe(val => {
        console.log(val);
      });
  }

}