Angular 如何避免错误类型错误:无法读取属性';nativeElement';未定义的?
我试图在Angular 10中创建一个应用程序。它是一个可重用的组件。从父组件接收输入参数 在.ts文件中,我有以下内容:-Angular 如何避免错误类型错误:无法读取属性';nativeElement';未定义的?,angular,typescript,angular-directive,Angular,Typescript,Angular Directive,我试图在Angular 10中创建一个应用程序。它是一个可重用的组件。从父组件接收输入参数 在.ts文件中,我有以下内容:- export class DateTimeComponent implements OnInit { private _ngModel: Moment= moment(); @Input() datePlaceHolder: string = "Date"; @Input() timePlaceHolder:
export class DateTimeComponent implements OnInit {
private _ngModel: Moment= moment();
@Input()
datePlaceHolder: string = "Date";
@Input()
timePlaceHolder: string = "Time";
@Input()
timeFormat:number=24;
@Input()
minutesGap:number=10;
timePart: string | Moment="";
datePart:Moment;
constructor() {}
ngOnInit() {
}
@Input()
get ngModel() {
return this._ngModel
}
@Output()
ngModelChange = new EventEmitter <Moment>();
set ngModel(date: Moment) {
let m=date.minutes()+this.minutesGap-1;
date.minutes(m - (m % this.minutesGap));
this.timePart = date;
this.datePart=date;
this._ngModel = date;
this.ngModelChange.emit(date);
}
timePartChange(ev:any) {
let d = moment(this._ngModel);
let m=moment(ev,"LT");
d.hours(m.hours()).minutes(m.minutes());
this.ngModel=d;
}
datePartChange(ev:Moment) {
let d = this._ngModel;
ev.hours(d.hours()).minutes(d.minutes());
this.ngModel=ev;
}
}
导出类DateTimeComponent实现OnInit{
private _ngModel:Moment=Moment();
@输入()
日期占位符:string=“Date”;
@输入()
时间占位符:string=“Time”;
@输入()
时间格式:数字=24;
@输入()
分钟间隔:数字=10;
时间部分:字符串|矩=”;
日期部分:时刻;
构造函数(){}
恩戈尼尼特(){
}
@输入()
获取ngModel(){
把这个还给我
}
@输出()
ngModelChange=neweventemitter();
设置模型(日期:时刻){
设m=date.minutes()+this.minutesGap-1;
日期分钟数(m-(m%this.minutesGap));
this.timePart=日期;
this.datePart=日期;
此模式=日期;
此.ngModelChange.emit(日期);
}
timePartChange(ev:任何){
设d=力矩(本模型);
设m=力矩(ev,“LT”);
d、 小时(m.hours())。分钟(m.minutes());
这个.ngModel=d;
}
datePartChange(ev:时刻){
设d=这个;
ev.小时(d.小时()).分钟(d.分钟());
这个.ngModel=ev;
}
}
在.html文件中,我有:-
*
<mat-form-field>
<input matInput placeholder="{{datePlaceHolder}}" [matDatepicker]="picker" [(ngModel)]="datePart" (ngModelChange)="datePartChange($event)"/>
<mat-datepicker-toggle matSuffix [for]="picker"></mat-datepicker-toggle>
<mat-datepicker #picker></mat-datepicker>
</mat-form-field><br/>
<mat-form-field>
<input matInput placeholder="{{timePlaceHolder}}" [format]="timeFormat" readonly [(ngModel)]="timePart" (ngModelChange)="timePartChange($event)" [ngxTimepicker]="timepicker"/>
<ngx-material-timepicker-toggle matSuffix [for]="timepicker"></ngx-material-timepicker-toggle>
<ngx-material-timepicker [minutesGap]="minutesGap" #timepicker></ngx-material-timepicker>
</mat-form-field>
*