angular2/ionic2 实现搜索结果中的搜索关键字高亮的示例

import { Pipe, Injectable, PipeTransform } from '@angular/core';
import { DomSanitizer } from '@angular/platform-browser';

@Pipe({
 name: 'keyword'
})
@Injectable()
export class KeywordPipe implements PipeTransform {
 constructor(private sanitizer: DomSanitizer) {
 }

 transform(val: string, keyword: string): any {
  const Reg = new RegExp(keyword, 'i');
  if (val) {
   const res = val.replace(Reg, `${keyword}`);
   console.log(res);
   return this.sanitizer.bypassSecurityTrustHtml(res);
  }
 }
}