增加教育培训

src/app/safe-html.pipe.spec.ts

+import { SafeHtmlPipe } from './safe-html.pipe';
+
+describe('SafeHtmlPipe', () => {
+  it('create an instance', () => {
+    const pipe = new SafeHtmlPipe();
+    expect(pipe).toBeTruthy();
+  });
+});

src/app/safe-html.pipe.ts

+import {Pipe, PipeTransform} from '@angular/core';
+import {DomSanitizer} from '@angular/platform-browser';
+@Pipe({
+  name: 'safeHtml'
+})
+export class SafeHtmlPipe implements PipeTransform {
+  constructor(private sanitized: DomSanitizer) {
+  }
+
+  transform(value: any, args?: any): any {
+    return this.sanitized.bypassSecurityTrustHtml(value);
+  }
+
+}