clickStar(index: number,event){
 if(this.activatedRoute.snapshot.params['id']== undefined){
   return false;
 }else {
   this.rating = index+1;
   this.stars = [];
   for(let i = 1; i<=5; i++){
     this.stars.push(i > this.rating);
   }
   console.log(event.target);
   // this.updatedRating.emit(this.rating);
 }
}

constructor(private activatedRoute: ActivatedRoute) { }

ngOnInit() {
 this.stars = [];
 for(let i = 1; i<=5; i++){
   this.stars.push(i > this.rating);
 }
}

上面是TS里面的，这是html的

<span *ngFor="let star of stars;let i = index;" class="glyphicon glyphicon-star"
[class.glyphicon-star-empty]="star" (click)="clickStar(i,$event)"></span>

点击第五颗星星的时候就会报错

content.js:140 Uncaught TypeError: Cannot read property 'nodeName' of null

    at HTMLDocument.onMouseClick