angular-docs-cn/public/docs/_examples/attribute-directives/ts/app/highlight.directive.1.ts

// #docregion
import {Directive, ElementRef, Input} from '@angular/core';

@Directive({
    selector: '[myHighlight]'
})

export class HighlightDirective {
    constructor(el: ElementRef) {
       el.nativeElement.style.backgroundColor = 'yellow';
    }
}
// #enddocregion