在 Angular 2 中有条件地添加禁用属性
Conditionally add disabled attribute in Angular 2
我有一个禁用的 ngBootstrap 日期选择器。如何根据我拥有的变量值有条件地禁用此功能,hasExistingEnrollmentPeriods
?
我试过 disabled="hasExistingEnrollmentPeriods"
但即使表达式为假,也总是将 disabled 设置为 true。
<input class="form-control" placeholder="MM-DD-YYYY" name="effecDate" ngbDatepicker #ed="ngbDatepicker"
(click)="ed.toggle(); DetectChange()" (ngModelChange)="onSelectEffectiveDate($event)" formControlName="effectiveDate" disabled>
<div class="input-group-append">
<button class="btn btn-outline-secondary calendar" (click)="ed.toggle()" type="button">
<i class="fal fa-calendar-alt"></i>
</button>
</div>
使用 Angular property binding with the brackets notation 确保参数被计算为表达式:
[disabled]="hasExistingEnrollmentPeriods"
您需要使用 [disabled]
,而不是 disabled
。
disabled="hasExistingEnrollmentPeriods"
表示 assign string value "hasExistingEnrollmentPeriods" to "disabled" attribute
.
[disabled]="hasExistingEnrollmentPeriods"
表示 assign value of "hasExisstingEnrollmentPeriods" to "disabled" attribute.
.
我有一个禁用的 ngBootstrap 日期选择器。如何根据我拥有的变量值有条件地禁用此功能,hasExistingEnrollmentPeriods
?
我试过 disabled="hasExistingEnrollmentPeriods"
但即使表达式为假,也总是将 disabled 设置为 true。
<input class="form-control" placeholder="MM-DD-YYYY" name="effecDate" ngbDatepicker #ed="ngbDatepicker"
(click)="ed.toggle(); DetectChange()" (ngModelChange)="onSelectEffectiveDate($event)" formControlName="effectiveDate" disabled>
<div class="input-group-append">
<button class="btn btn-outline-secondary calendar" (click)="ed.toggle()" type="button">
<i class="fal fa-calendar-alt"></i>
</button>
</div>
使用 Angular property binding with the brackets notation 确保参数被计算为表达式:
[disabled]="hasExistingEnrollmentPeriods"
您需要使用 [disabled]
,而不是 disabled
。
disabled="hasExistingEnrollmentPeriods"
表示assign string value "hasExistingEnrollmentPeriods" to "disabled" attribute
.[disabled]="hasExistingEnrollmentPeriods"
表示assign value of "hasExisstingEnrollmentPeriods" to "disabled" attribute.
.