Angular 即使是@Input,也无法绑定宽度
自定义复选框将[选中]作为@Input属性。无论它们是未定义的、true还是false,屏幕上的复选框始终处于选中状态。 HTML-顺便说一句,它们位于无序列表中,并且不在表单中Angular 即使是@Input,也无法绑定宽度,angular,checkbox,initialization,controls,Angular,Checkbox,Initialization,Controls,自定义复选框将[选中]作为@Input属性。无论它们是未定义的、true还是false,屏幕上的复选框始终处于选中状态。 HTML-顺便说一句,它们位于无序列表中,并且不在表单中 <checkbox id="UpperCaseLetter" #chkb [checked]="true" [disabled]="false">Upper Case Letter</checkbox> <checkbox id="LowerCaseLetter" #chkb >Lo
<checkbox id="UpperCaseLetter" #chkb [checked]="true" [disabled]="false">Upper Case Letter</checkbox>
<checkbox id="LowerCaseLetter" #chkb >Lower Case Letter</checkbox>
<checkbox id="NumericDigits" #chkb [checked]="false">Numeric Digits</checkbox>
<checkbox id="NonAlphanumericChars" #chkb [checked]="true">Non-Alphanumeric Chars</checkbox>
复选框HTML simple:-:
<input type="checkbox"
checked="{{checked}}"
[disabled]="isDisabled"
(change)="onChange($event)" />
<span><ng-content></ng-content></span>
Checkbox.component.ts-正如您所看到的,我已经尝试将内容移动到AfterInit,但没有任何效果
import {AfterViewInit, Component, EventEmitter, Input, OnInit, Output} from '@angular/core';
import {ElementState, PageMgrService} from '../page-mgr.service';
import {BehaviorSubject} from 'rxjs/BehaviorSubject';
@Component({
selector: 'checkbox',
templateUrl: './checkbox.component.html',
styleUrls: ['./checkbox.component.scss']
})
export class CheckboxComponent implements OnInit, AfterViewInit {
@Input() id: string;
@Input() checked: boolean;
@Input('disabled') isDisabled: boolean;
@Output('onChange') onChangeEvent = new EventEmitter;
FSubj: BehaviorSubject<ElementState>;
value: boolean;
InstanceId = 'PasswordConfigAdmin';
constructor(private pagMgr: PageMgrService) {
this.InstanceId = pagMgr.GetUniquePageId();
this.FSubj = pagMgr.GetSubject();
}
ngOnInit() {
this.value = (this.checked === null || this.checked === undefined || this.checked === false ? false : true);
}
ngAfterViewInit() {
this.checked = (this.checked === null || this.checked === undefined || this.checked === false ? false : true);
this.controlChanged(this.id, this.checked);
}
getValue(): boolean {
return this.value;
}
setValue(val: boolean) {
this.value = val;
this.checked = val;
}
setDisabled(val: boolean) {
this.isDisabled = val;
}
onChange($event) {
this.value = $event.target.checked;
this.controlChanged(this.id, this.value);
}
controlChanged(ctrl: string, arg: any) {
const elt = new ElementState();
elt.controlId = ctrl;
elt.value = arg;
elt.instance = this.InstanceId;
this.FSubj.next(elt);
}
}
看起来很直截了当,但是??提前感谢您的建议。来自MDN:
当type属性的值为radio或checkbox时选中,则
此布尔属性的存在表示控件是
默认情况下选择,否则将忽略该选项
我会据此假设HTML应该是这样检查的:
<input type="checkbox"
checked
[disabled]="isDisabled"
(change)="onChange($event)" />
或者,对于未选中的:
<input type="checkbox"
[disabled]="isDisabled"
(change)="onChange($event)" />
您可以通过以下方式实现您的目标:
<input *ngIf='checked' type="checkbox"
checked
[disabled]="isDisabled"
(change)="onChange($event)" />
<input *ngIf="!checked" type="checkbox"
[disabled]="isDisabled"
(change)="onChange($event)" />
对于您的输入,请尝试[选中]=选中