angularjs – 将类型为datetime-local的输入绑定到角度2中的Date

您可以使用以下格式绑定日期：yyyy-MM-ddTHH：mm,您还可以从date.toISOString().slice(0,16)(切片在分钟后移除时间部分).

@Component({
    selector: 'app',template: `<input type="datetime-local" [value]="date" 
          (change)="date=$event.target.value" /> {{date}}` 
})
export class AppComponent {
    date: string;
    constructor() {
        this.date = new Date().toISOString().slice(0,16);
    }
}

请记住,date.toISOString()将从本地时间返回一个日期偏移量.您还可以自己构建日期字符串：

private toDateString(date: Date): string {
    return (date.getFullYear().toString() + '-' 
       + ("0" + (date.getMonth() + 1)).slice(-2) + '-' 
       + ("0" + (date.getDate())).slice(-2))
       + 'T' + date.toTimeString().slice(0,5);
}

如果您想要将选择绑定到Date模型,可以使用它来构建自定义日期组件：

@Component({
    selector: 'my-date',events: ['dateChange'],template: `<input type="datetime-local" [value] = "_date" 
             (change) = "onDateChange($event.target.value)" />`
})
export class MyDate{
    private _date: string;
    @Input() set date(d: Date) {
        this._date = this.toDateString(d);
    }
    @Output() dateChange: EventEmitter<Date>;
    constructor() {
        this.date = new Date();
        this.dateChange = new EventEmitter();       
    }

    private toDateString(date: Date): string {
        return (date.getFullYear().toString() + '-' 
           + ("0" + (date.getMonth() + 1)).slice(-2) + '-' 
           + ("0" + (date.getDate())).slice(-2))
           + 'T' + date.toTimeString().slice(0,5);
    }

    private parseDateString(date:string): Date {
       date = date.replace('T','-');
       var parts = date.split('-');
       var timeParts = parts[3].split(':');

      // new Date(year,month [,day [,hours[,minutes[,seconds[,ms]]]]])
      return new Date(parts[0],parts[1]-1,parts[2],timeParts[0],timeParts[1]);     // Note: months are 0-based

    }

    private onDateChange(value: string): void {
        if (value != this._date) {
            var parsedDate = this.parseDateString(value);

            // check if date is valid first
            if (parsedDate.getTime() != NaN) {
               this._date = value;
               this.dateChange.emit(parsedDate);
            }
        }
    }
}

您的组件的用户将绑定到具有双向模型绑定的Date模型：

@Component({
    selector: 'my-app',directives: [MyDate],template: '<my-date [(date)]="date"></my-date>  {{date}}' 
})
export class AppComponent {
    @Input() date: Date;
    constructor() {
        this.date = new Date();
    }
}

或者如果要避免自定义标签,请重写组件作为指令：

<input type="datetime-local" [(date)]="date" />

Demo Plnkr with Directive