Angular 对于颜色和动画，角度材质无法正常工作

嗨，伙计们，我正在学习Max的UDE，我的平均堆栈教程，我对材料有问题，现在对元素没有炫耀

在我让我的电脑进入睡眠状态之前，我使用的材料和*NGF都是有效的。 我的设置：Ubuntu，VSCode，节点：10.15.3，npm:6.7.0

这是我的

此外，angular cli向我显示以下警告：

您的全局Angular CLI版本7.3.6高于本地版本 版本7.0.7。使用本地CLI版本

将post-list.component.html的第9行更改为

到

你错过了ngIf

---

对于警告，它只是说您安装的@angular/cli全局npm install-g比package.json的要大，但这不会是问题的根源。

请发布您的packages.json文件。这可能是你遇到麻烦的地方。关于@angular/cli warning，您可能已经在那里定义了它，并在全局范围内安装了它；将其从packages.json中删除或卸载全局实例。我不怀疑这是你真正的问题。可能是重复的

<mat-accordion>
  <mat-expansion-panel *ngFor="let post of posts">
    <mat-expansion-panel-header>
      {{post.title}}
    </mat-expansion-panel-header>
    <p>{{post.content}}</p>
  </mat-expansion-panel>
</mat-accordion>

{
  "name": "mean-course",
  "version": "0.0.0",
  "scripts": {
    "ng": "ng",
    "start": "ng serve",
    "build": "ng build",
    "test": "ng test",
    "lint": "ng lint",
    "e2e": "ng e2e"
  },
  "private": true,
  "dependencies": {
    "@angular/animations": "~7.0.0",
    "@angular/cdk": "~7.3.5",
    "@angular/common": "~7.0.0",
    "@angular/compiler": "~7.0.0",
    "@angular/core": "~7.0.0",
    "@angular/forms": "~7.0.0",
    "@angular/http": "~7.0.0",
    "@angular/material": "^7.3.5",
    "@angular/platform-browser": "~7.0.0",
    "@angular/platform-browser-dynamic": "~7.0.0",
    "@angular/router": "~7.0.0",
    "core-js": "^2.5.4",
    "rxjs": "~6.3.3",
    "zone.js": "~0.8.26"
  },
  "devDependencies": {
    "@angular-devkit/build-angular": "~0.10.0",
    "@angular/cli": "~7.0.3",
    "@angular/compiler-cli": "~7.0.0",
    "@angular/language-service": "~7.0.0",
    "@types/node": "~8.9.4",
    "@types/jasmine": "~2.8.8",
    "@types/jasminewd2": "~2.0.3",
    "codelyzer": "~4.5.0",
    "jasmine-core": "~2.99.1",
    "jasmine-spec-reporter": "~4.2.1",
    "karma": "~3.0.0",
    "karma-chrome-launcher": "~2.2.0",
    "karma-coverage-istanbul-reporter": "~2.0.1",
    "karma-jasmine": "~1.1.2",
    "karma-jasmine-html-reporter": "^0.2.2",
    "protractor": "~5.4.0",
    "ts-node": "~7.0.0",
    "tslint": "~5.11.0",
    "typescript": "~3.1.1"
  }
}

<p class="info-text mat-body-1" ngIf="posts.length <= 0"> No posts yet!</p>

<p class="info-text mat-body-1" *ngIf="posts.length <= 0"> No posts yet!</p>