我正在为我的angular 6应用中的粘性标头创建粘性导航栏指令
这是我到目前为止所拥有的:
import { Directive, Input, Renderer, ElementRef, OnInit } from '@angular/core';
import { Observable } from 'rxjs';
import { fromEvent } from 'rxjs';
@Directive({
selector: '[ngStickyNav]'
})
export class StickyNavDirective implements OnInit {
private offsetTop: number;
private lastScroll: number = 0;
private isSticky: boolean = false;
@Input('stickyClass') stickyClass: string;
constructor(private elementRef: ElementRef, private renderer: Renderer) {
}
ngOnInit(): void {
this.offsetTop = this.elementRef.nativeElement.offsetTop;
Observable.fromEvent(window, 'scroll').subscribe(() => this.manageScrollEvent());
}
}
我遇到以下错误:
类型为“可观察的类型”的属性“ fromEvent”不存在。
我的代码有什么问题?虽然是新手
答案 0 :(得分:7)
在rxjs v6中,它只是fromEvent
:
fromEvent(window, 'scroll').subscribe(() => this.manageScrollEvent());