小编Mdk*_*uma的帖子

这个问题很简单,但我无法摆脱它.

我有一个<header>父模板,我需要它通过路由模块显示子模板时消失.我期望在header标签中添加一个类,以便我可以通过CSS隐藏它.这就是我所拥有的:

app.component.ts

import { Component } from '@angular/core';
@Component({
  selector: 'app',
  template: `
    <header [class.hidden]="hide">
      <h1>My App</h1>
      <ul>
            <li><a href="/home"></a></li>
            <li><a href="/showoff"></a></li>
      </ul>
    </header>
    <router-outlet></router-outlet>
  `
})

export class AppComponent {
  hide = false; // <-- This is what I need to change in child component
}

APP-routing.module.ts

import { RouterModule, Routes } from '@angular/router';

import { HomeComponent } from './welcome.component';
import { ShowOffComponent } from './show.off.component';

const routes: Routes = [
  { path: '', component: HomeComponent …

我是 Tradingview 图表库的新手，我想创建类似的响应式图表。

问题是，交易视图图表库需要指定宽度和高度。这是代码。

const chart = LightweightCharts.createChart(e, {
      width: e.offsetWidth,
      height: e.offsetHeight,
      layout: {
        backgroundColor: 'rgb(17, 17, 39)',
        textColor: 'rgba(255, 255, 255, 0.9)',
      },
      grid: {
        vertLines: {
          color: 'rgb(41, 44, 58)',
        },
        horzLines: {
          color: 'rgb(41, 44, 58)',
        },
      },
      crosshair: {
        mode: LightweightCharts.CrosshairMode.Normal,
      },
      priceScale: {
        borderColor: 'rgba(197, 203, 206, 0.8)',
      },
      timeScale: {
        borderColor: 'rgba(197, 203, 206, 0.8)',
      },
    });