ng-if和ng-repeat是AngularJS框架中的指令,用于在HTML页面中动态显示和控制元素。 ng-if指令根据表达式的值来决定是否在DOM中插入或移除元素。当表达式为真时,元素会被插入...
ng-if will remove elements from DOM. This means that all your handlers or anything else attached to those elements will be lost. For example, if you bound a click handler to one of child elements, when ng-if evaluates to false, that element will be removed from DOM and your click handl...
1.ng-if will remove elements from DOM. This means that all your handlers or anything else attached to those elements will be lost. For example, if you bound a click handler to one of child elements, when ng-if evaluates to false, that element will be removed from DOM and your click h...
this means removing the control imperatively in the model by callingthis.form.removeControl('name')when the button is clicked. Then, the ngIf should depend on the control's presence in the model with*ngIf="form.contains('name')", rather than the other way around. See example plunker here...
will remove elements from DOM. This means that all your handlers or anything else attached to those elements will be lost. For example, if you bound a click handler to one of child elements, when ng-if evaluates to false, that element will be removed from DOM and your click handler will...