Question

获取我花了几个小时尝试修复的打字稿错误。它指向我的game-details.component.ts（26,54），看起来对我来说完全没问题。

此外，当我在我的game-detail.component webpack中使用CTR + S编译成功并且我的程序运行正常。任何人都可以向我解释为什么会这样吗？

以下是代码：

import { Component, OnInit, Input } from '@angular/core';
import { ActivatedRoute, Params } from '@angular/router';
import { Location } from '@angular/common';

import { GameService } from '../../game.service';
import { UserComment } from '../../comment.model';

@Component({
  selector: 'app-game-detail',
  templateUrl: './game-detail.component.html',
  styleUrls: ['./game-detail.component.css'],
  providers: [GameService]
})
export class GameDetailComponent implements OnInit {

  gameKey: string;
  gameDetail;

  constructor(private route: ActivatedRoute, private location: Location, private gameService: GameService) { }

  ngOnInit() {
    this.route.params.forEach((urlParameters)=> {
      this.gameKey = urlParameters['id'];
    });
    this.gameService.getGameByKey(this.gameKey).subscribe(dataLastEmittedFromObserver => {
       this.gameDetail = dataLastEmittedFromObserver;);
      }

      addComment(com: string) {
      const newComment: UserComment = new UserComment(com);
      this.gameDetail.comments.push(newComment);
      this.gameService.updateComments(this.gameDetail);
      // this.toggleDisplay();
    }
}

Answer 1

如果你看一下你的代码，那么在 ngOnInit() 里面有一个问题，你几乎没有错位的paranthesis，将其更改为

ngOnInit() {
  this.route.params.forEach((urlParameters) => {
            this.gameKey = urlParameters['id'];
        });      
  this.gameService.getGameByKey(this.gameKey)
  .subscribe(dataLastEmittedFromObserver => {
            this.gameDetail = dataLastEmittedFromObserver;
        });
}

Answer 2

您所做的并不是关闭括号之间的括号。或者错误地括号括起来。取决于你想做什么。

Answer 3

你放错了括号。

试试这个：

this.gameService.getGameByKey(this.gameKey).subscribe(dataLastEmittedFromObserver => {
        this.gameDetail = dataLastEmittedFromObserver;
       });

打字稿错误TS1128：预期的声明或声明

3 个答案: