Thanks for contributing an answer to Stack Overflow! Using Angular 5, the markAsDirty() / markAsTouched() doesn't recurse into any sub-FormGroups. I looked over the documentation on angular and the example with the key event doesn't work very well for me and I can't find a proper example how to do this so please help me out The problem: I try to read the input's value and after submiting the value to another component that will add the value to a select tag(e.g. Declaring $ (or jQuery) as JQueryStatic will give you a typed reference to jQuery. The Constructor is a default method of the class that is executed when the class is instantiated and ensures proper initialisation of fields in the class and its subclasses. They can also add new languages using dialog panel. this.form.markAllAsTouched(); After they added a language and returned back. The Constructor is a default method of the class that is executed when the class is instantiated and ensures proper initialisation of fields in the class and its subclasses. Have updated the logic to render the component outside *ngIf, there by ViewChild was able to successfully initialize the element. Arrow (indicating current sort direction) must be displayed. For example, when you have a large amount of data and there is a change in that data, angular will render the view again, if the data changes every second, your application will become slower. Angular, or better Dependency Injector (DI), analyses the constructor parameters and when it creates a new instance by calling new MyClass() it tries to find providers that match the types of the this.myForm.resetForm(); submitted false your validations. I highly recommend starting with the OP's self response first: properly think about what can be done in the constructor vs what should be done in ngOnChanges().. Note, for Angular 8 you have to make sure to set { static: false }, which is a default setting in other Angular versions: @ViewChild('contentPlaceholder', { static: false }) Note: if contentPlaceholder is a component you can change ElementRef to your component Class: in DashboardComponent, mark everything that should not be printed as 'do not print', it can get a bit complicated, and in that case, you may want to do what others suggest which is to create a single page for printing. Create issue on GitHub if you found a bug. Update Angular 6: Angular 6 now offers pretty much every formatting functions used by the pipes publicly. With the non-null assertion operator we can tell the compiler explicitly that an expression has value other than null or undefined.This is can be useful when the compiler cannot infer the type with certainty but In your angular component you should reference a DOM element from the template using @ViewChild() After the view has been initialized you can use the nativeElement property of this object and pass to jQuery. Note, for Angular 8 you have to make sure to set { static: false }, which is a default setting in other Angular versions: @ViewChild('contentPlaceholder', { static: false }) Note: if contentPlaceholder is a component you can change ElementRef to your component Class: However, we should not use DOM manipulation (document.xyz()) in angular. Get only value of selected option in onchangeevent. If i understand you properly you are asking about ChangeDetectionStrategy Angular has two options enum ChangeDetectionStrategy { OnPush: 0 Default: 1 } If you use default it simply will "re-render" you view after each event such a click. Go through this link1, link2 Even I haven't read it. this.myForm.resetForm(); submitted false your validations. @GregorDoroschenko I was trying to use a model with additional information about the file and I had to do this to get it to work: const invFormData: FormData = new FormData(); invFormData.append('invoiceAttachment', invoiceAttachment, invoiceAttachment.name); invFormData.append('invoiceInfo', JSON.stringify(invoiceInfo)); The As of RC.3, the preferred solution is to Declaring $ (or jQuery) as JQueryStatic will give you a typed reference to jQuery. It breaks the browser's back/forward button. The fact is that what works has changed a number of times as the Angular team has changed its Router. @LucaEffeFederzoni I believe it works regardless of your hierarchy, as long as you mark each div appropriately. I.e. you will access your Teams at stackoverflowteams.com, and they will no longer appear in the left sidebar on stackoverflow.com. I highly recommend starting with the OP's self response first: properly think about what can be done in the constructor vs what should be done in ngOnChanges().. How to get the id of selected option value in mat-select angular 5. Please be sure to answer the question.Provide details and share your research! @Gnter's answer is correct. Update. For example, you can now use the formatDate function directly. I'm new at Angular and I'm still trying to understand it. Please find enclosed a proper example of how to upload an image in Base64 in Angular 2/4 and also its display. Declaring $ (or jQuery) as JQueryStatic will give you a typed reference to jQuery. But avoid . I just wanted to propose yet another method. Hence ViewChild was unable to initialize the required element. I broke out the code above into a recursive function and call it on any sub-FormGroups. I broke out the code above into a recursive function and call it on any sub-FormGroups. And defined an angular expression on the placeholder attribute, which will decide if we show the placeholder or not. Check your email for updates. Angular ERROR TypeError: Cannot read properties of undefined (reading 'onDestroy') Hot Network Questions How do we create an interstellar communications system? The fact is that what works has changed a number of times as the Angular team has changed its Router. This is what I want to achieve: *@ViewChild('chart', {static: false})* The static: false is going to be the default fallback behaviour in Angular 9. this.submitted = false; Update. Using Angular 5, the markAsDirty() / markAsTouched() doesn't recurse into any sub-FormGroups. Asking for help, clarification, or responding to other answers. Although @Vega provides the direct answer to your question, there are issues. Asking for help, clarification, or responding to other answers. If i understand you properly you are asking about ChangeDetectionStrategy Angular has two options enum ChangeDetectionStrategy { OnPush: 0 Default: 1 } If you use default it simply will "re-render" you view after each event such a click. If you're user clicks the browser back or forward button, they lose their place and gets scrolled way at the top. Specifically, I've tried to "put a component inside another component" like this: I stumbled upon this problem when trying to make the presence of a button depend on the state of the form: NOTE: There are many different answers here, and most have been valid at one time or another. You could also add the host-binding inside the @Component()-decorator.You can put the event and desired function call in the host-metadata-property like so: it's a common misconception to miss a few syntaxes in writing the code , one such popular mistake everyone tries to make is not using * before ngIf , which when used makes angular compiler to read ngIf as template reference variable and checks for local reference for the variable which wont be found in the file. If you have questions about Swiper ask them in StackOverflow or Swiper Discussions. : any; static: boolean; }) Now, the interesting part is the static value, which by definition says Better to follows expert's blogs. If you have questions about Swiper ask them in StackOverflow or Swiper Discussions. *@ViewChild('chart', {static: false})* The static: false is going to be the default fallback behaviour in Angular 9. Get only value of selected option in onchangeevent. Original. This is what I want to achieve: Update Angular 6: Angular 6 now offers pretty much every formatting functions used by the pipes publicly. Name your Form something like this