在Angular中使用mat-form-field时，启动屏幕挂起

问题描述

我正在创建一个使用初始屏幕的应用程序。一切正常，直到我向登录页面添加mat-form-field元素为止。然后，启动屏幕显示，并且永不消失。

这是错误还是其他？我该如何规避？

您可以在下面找到代码。

我的启动画面实现：

splash-screen-component.ts

import { Component,OnInit } from '@angular/core';

@Component({
  selector: 'splash-screen',templateUrl: './splash-screen.component.html',styleUrls: ['./splash-screen.component.css'],})
export class SplashScreenComponent implements OnInit {
  windowWidth: string;
  //showSplash = true;
  showSplash = false;

  ngOnInit(): void {
    setTimeout(() => {
      this.windowWidth = '-' + window.innerWidth + 'px';

      setTimeout(() => {
        this.showSplash = !this.showSplash;
      },500);
    },3000);
  }
}

splash-screen.component.html

<div
  class="app-splash-screen"
  [ngStyle]="{ left: windowWidth }"
  *ngIf="showSplash"
>
  <div class="app-splash-inner">
    <div class="app-logo"></div>
    <div class="app-label">LINK easy</div>
    <div class="app-loader"></div>
  </div>
</div>

我的目标网页的实现。问题是：垫子形式场。当我删除表单中的所有内容时，启动屏幕将起作用。

landing-page.component.html

<div class="main-container">
  <div class="flex-container">
    <!--   <h1 class="header">Mitä tarvitset?</h1> -->

    <mat-card>
      <button
        mat-button
        class="button buttonContent"
        mat-button
        routerLink="/projects"
      >
        <span class="buttonText">PROJEKTIT</span>
      </button>

      <button
        mat-button
        class="button buttonContent"
        mat-button
        routerLink="/experts"
      >
        <span class="buttonText">ASIANTUNTIJAT</span>
      </button>

      <button
        mat-button
        class="button buttonContent"
        mat-button
        routerLink="/landing"
      >
        <span class="buttonText">TARJOUSPYYNTÖ</span>
      </button>

      <button
        mat-button
        class="button buttonContent"
        mat-button
        routerLink="/contact"
      >
        <span class="buttonText">YHTEYDENottO</span>
      </button>

      <button
        mat-button
        class="button buttonContent"
        mat-button
        routerLink="/landing"
      >
        <span class="buttonText">REFERENSSIT</span>
      </button>
      <form class="tp-form">
        <mat-form-field class="tp-full-width">
          <input
            type="text"
            placeholder="Hae tästä"
            aria-label="Number"
            matInput
            [formControl]="myControl"
            [matAutocomplete]="auto"
          />
          <mat-autocomplete #auto="matAutocomplete">
            <mat-option
              [routerLink]="['/expert-details']"
              [state]="{ id: name[0],name: name }"
              *ngFor="let name of names"
              [value]="name[0]"
            >
              {{ name[1] }}
            </mat-option>
            <mat-option
              [routerLink]="['/expert-details']"
              [state]="{ id: name[0],name: name }"
              *ngFor="let name of names"
              [value]="name[0]"
            >
              {{ name[2] }}
            </mat-option>
          </mat-autocomplete>
        </mat-form-field>
      </form>
    </mat-card>
  </div>
</div>

landing-page.component.ts

import { Component,OnInit } from '@angular/core';
import { FormControl } from '@angular/forms';
import { MatAutocomplete } from '@angular/material/autocomplete';
@Component({
  selector: 'app-landing-page',templateUrl: './landing-page.component.html',styleUrls: ['./landing-page.component.css'],})
export class LandingPageComponent implements OnInit {
  title = 'materialApp';
  myControl = new FormControl();
  niilo = 'Niilo Salminen';
  elli = 'Elli Saartamo';
  mari = 'Mari Paananen';
  UXDesigner = 'UX Designer';
  RDEngineer = 'R&D Engineer';
  industrialDesigner = 'Industrial Designer';

  names = [
    [0,this.niilo,this.UXDesigner],[1,this.elli,this.RDEngineer],[2,this.mari,this.industrialDesigner],];
  constructor() {}

  ngOnInit(): void {}
}

解决方法

已解决。我试图将undefined分配给[value]。