错误日志：
runtime_compiler.js：353未捕获错误：无法编译＆＃39; HighlightDirective＆＃39;因为它不是component.assertComponent
...
指令：
import {Directive, ElementRef, Renderer} from '@angular/core';
@Directive({
selector: '[dirHighlight]'
})
export class HighlightDirective {
constructor(private elementRef: ElementRef, private renderer :Renderer) {
//this.elementRef.nativeElement.style.backgroundColor = 'green';
this.renderer.setElementStyle(this.elementRef.nativeElement,'background-color', 'green');
}
}
Html文件：
<h2> Custom Attribute Directive</h2>
<div dirHighlight> Some thing</div>
app.component.ts
import { Component } from '@angular/core';
import { HighlightDirective } from './highlight.directive';
@Component({
selector: 'dir-root',
templateUrl: './app.component.html',
styleUrls: ['./app.component.css'],
entryComponents:[HighlightDirective],
})
export class AppComponent {
}