“字符串”类型的参数不可分配给“日期”类型的参数

Question

我不太清楚我在日期方面哪里出了问题。我收到错误消息：

“'string' 类型的参数不能分配给'Date' 类型的参数。创建"

<mat-sidenav-content>
    <div class="sect">
        <h1>Damage Assessment Report</h1>
    </div>
    <mat-card>
        <mat-card-header>Create report:</mat-card-header>
        <br><br>
        <mat-card-content>
            <div> 
                <mat-form-field>
                    <mat-label>Report Description</mat-label>
                    <input
                        #DescOfReportInput  
                        placeholder="Description of Report"
                        matInput type= "string"
                        required>
                </mat-form-field>
                    <br>
                <mat-form-field>
                    <mat-label>Author</mat-label>
                    <input  
                        #AuthorInput
                        placeholder="Author"
                        matInput type= "string"
                        required>
                </mat-form-field>
                <br>
                <mat-form-field>
                <mat-label>Date</mat-label>
                <input  
                        #DateInput
                        placeholder="----/--/--"
                        matInput type= "Date"
                        required>
                </mat-form-field>
                <br>
            </div>
            <div> 
                <button mat-raised-button type="button" (click)="createDamageAssessmentReport(DescOfReportInput.value, AuthorInput.value, DateInput.value)" color="primary">Create</button>
            </div>
        </mat-card-content>
    </mat-card>
</mat-sidenav-content>

相关的TypeScript文件如下：

import { Component, OnInit } from '@angular/core';
import { DamageAssessmentReportService } from 'src/app/damage-assessment-report.service';

@Component({
  selector: 'app-fa-daform',
  templateUrl: './fa-daform.component.html',
  styleUrls: ['./fa-daform.component.css']
})
export class FADAFormComponent implements OnInit {

    constructor(private damageAssessmentReportService : DamageAssessmentReportService) { }
  
    //assessmentDescription: string, author: string, reportDateTime: Date
  
    createDamageAssessmentReport(assessmentDescription: string, author: string, reportDateTime: Date){
        this.damageAssessmentReportService
            .createDAReport(assessmentDescription,author, reportDateTime)
            .subscribe((response : any)=>{
                console.log(response);
            });
    }

    ngOnInit(): void { }
}    

Answer 1

试试这个：

createDamageAssessmentReport(assessmentDescription: string, author: string, reportDateString: string){

const reportDateTime = new Date(reportDateString); // Here you should have your date ready to be used as you wish

this.damageAssessmentReportService
   .createDAReport("New Report","Name", new Date(2020, 9, 10))
   .subscribe((response : any)=>{
                console.log(response);
   });
}