Angular component visible stack overflow Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company use [hidden] property of angular which does not remove the section/ component from the DOM instead hides it from the view thus there is no need of reinstantiating the component in the DOM (similar to css display: hidden property) [hidden]= true-> Hides the Section from the view but it exists in DOM [hidden]= false-> Show's the section in view *ngIf="false"-> Hides the Section If you want to check, whether or not your child component is checked/viewed, then please use Angular Life Cycle Hooks in child component. URL !== 'null'; else noData" To play with the variables in view component in Angular, use {{ }} statements. If 'mat-icon' is an Angular component, then verify that it is part of this module. I have to first open a different component and then click the link to open the particular parent component, otherwise nothing gets displayed I'm new to Angular and I need some advice. import { Injectable } from '@angular/core'; import { BehaviorSubject } from 'rxjs'; @Injectable() export class I'm trying to get this to work but I don't know how, I have several inputs that are only displayed when the user needs them. present(); This component contains a Form (reactive form), and has various controls initialized, and also parts hidden/shown using *ngIfs. const modal = await this. Now, in order to use the service I need to inject the service to the component, so once I inject it to the constructor, it's no longer displays Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; @Component({ selector: 'app-other-component', }) export class OtherComponent implements OnInit { ngOnInit() { this. If 'pb-ds-pluginstable' is an Angular component, then verify that it is part of this module. schemas' of this component to suppress this message. At last the AppComponent is between the body-tag of the index file - the one file which is served by the server. When you have a huge list of components, this is more performant than other libraries because it keeps the number of estoy trabajando con componente de primeNG específicamente con el p-calendar , necesito que ese componente al hacer click se oculte y How can I select an element in a component template? What is the equivalent of ngShow and ngHide in Angular? BehaviorSubject vs Observable? How to use jQuery with Angular? How to use *ngIf else in Angular? In There are two main ways to dynamically render a component: in a template with NgComponentOutlet, or in your TypeScript code with ViewContainerRef. Modified 3 years, 11 months ago. If 'mat-icon' is a Web Component then add 'CUSTOM_ELEMENTS_SCHEMA' to the '@NgModule. In the component, data comes from a REST API and a database. 0. <p-dialog> <p-dropdown appendTo="body"></p-dropdown> </p Also make sure you're not trying to fix a problem that isn't a problem. They become visible only when the login is successful. handle. NgComponentOutlet Here a short demonstration: @OnPageVisible() logWhenPageVisible(): void { console. visible { visibility: visible; } css; angular; Share. log( 'OnPageVisible' ); console. html', styleUrls: ['. To communicate between different components, there are different ways. ; Something like below: *ngIf="data?. I am new to Angular 2 and Angular Material I tried creating one example to check Angular Material but its The webpage that I want to create must have a lot of blocks (angular2 components). Angular shared component is not displayed. . Make isOverflowing method public so that user can access element overflow state using ViewChildren or ViewChild in We have an Angular 14 project and a user reported that Chrome would crash for them consistently with the 'sad tab' and error code 11 when they opened certain mat-select Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company The first file executed is the main. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Template parse errors: 'pb-ds-pluginstable' is not a known element: 1. create({ component: MyComponent, await modal. eg. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Before adding the service, the components worked well (the component only displayed static html). The problem is that when the components become visible the data is not pre loaded. Define a data sharing service. html import { Component } from '@angular/core'; @Component({ selector: 'app-root', templateUrl: '. In this file AppModule is imported. 0 application the header,left and right panel are hidden in the login page. handle { height: 25px !important; position: relative; } . changes event in ngAfterViewInit. But if they are activated, it must be necessary to fill them. modalController. You can nest components - display one component alone may work but I do not understand how. log( 'visible' ); Or simply do: Instead of using IntersectionObserver natively, we can create a generic directive that will emit an event on elements visibility change. I only need to display the recaptcha badgein login page. If you want to communicate between parent and child component, you can use EventEmitter to emit event from child component and handle the event in your parent component; If you want to communicate between any components, you can use Service and implement communication I have an Ionic 4 / Angular 8 application, where I display a component inside a modal. All is working but the recaptcha badge is showing in all pages of my application. dataForm = new FormControl({ myInput: new FormControl(null, Validators. I am trying to add reCaptcha V3 in my login page. e. simply not fetched yet), it has resulted in an NPE, or TypeError: Can not read properties of But still in HomeModule I cannot use components from MaterialModule, error: 1. works vis-à-vis variable assignments: "Assignments do not evaluate their left-hand sides" You could find the location of each child component inside ScrollView upon scroll event, comparing the same with the vertical offset will let you know whether the component is really visible on screen. Hot Network Questions For me the issue was that I was getting errors in the html, precisely in angular-generated components and it didn't compile. In AppModule the root-component AppComponent is imported. <app-header></app-header> <router-outlet></router-outlet> I want to hide and show certain navbar items based on the component that is currently showing. Thanks in advance Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Then the component is always not visible. Improve this question. Clicking the buttons will show relevant component and hide the not relevant. But when this parent component is itself called directly by its parent, the Oninit method doesn't toggle the parent component. Now I want only the data from the database to be reloaded because the data from the rest API is taking too long and doesn't While working with Angular, sometimes after compilation my components or some HTML elements that I write on the app template are not visible but if you inspect the page, even if there isn't any err Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI You can use a BehaviorSubject for communicating between different components throughout the app. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company There are two primary ways to solve this problem: Add an appendTo section to each component that needs to be able to overflow the dialog. You can define a data sharing service containing the BehaviorSubject to which you can subscribe and emit changes. x library to monitor when elements are visible in the DOM. 2. So I want to initialize only couple of them (which would be visible from the beginning) and others would be initialized later (for example when user scrolls, so I will save call by network which loads data and the rendering of the page would be much faster). You use a radio button in your example and that's actually an element that should not be tab focusable individually. component. import { Pipe } from '@angularcore'; Tell admin 10 There are multiple ways we can provide this access. When you have a group of radio buttons contained in a radio group, the group as a whole can receive TAB keyboard focus and the focus goes to the currently selected radio button. ts. . So i got this. URL && data. A "visible" class is redundant as it will become invisible / visible just by adding When you pass a reference type value from parent to child it means either of your components would work with the same value. component. So when the parent component's parent is clicked, nothing is dispalyed. But it is the property: JsonSUmmary: Check null value in variable in angular component. What is the best practice to achieve this? Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; How to package an angular component along with all the dependent components and services in angular7 to use it in other angular apps. If your component has to be aware of this, you can use this tab change event to detect which tab is visible, and if you know which tab is visible, you also know if your Angular 19. load(); } load() { // needs to load datas only if the user see the component } } How to achive in the OtherComponent to start the this. load() only if the component is visible to the user? I want to reload datas again if the user In my Angular 4. Here is a Playground example. As an example, consider these elements bbs-accordion-header //(width 0px, height 0px). So it will work with all changes of your reference value. As you scroll down / up, the background color of visible components will turn green, red otherwise. Below is how you can trim the trailing / if present, split the whole string by / I created a component in Angular. constructor() ngOnChanges() ngOnInit() ngDoCheck() ngAfterContentInit() ngAfterContentChecked() ngAfterViewInit() ngAfterViewChecked(). So along with null value, you also need to compare "null" string as well if you want to filter it out. I'm using a bootstrap navbar (ul and li elements) in a header component and a router outlet. Viewed 17k times 4 . Here’s how it could look like: javascript - Angular 2 Filter Pipe - Stack Overflow Trying to write a custom pipe to hide some items. hidden { visibility: hidden; } . I have 3 buttons and 3 components, What I want is, initially, only the first element visible. And in the component (aka the "do stuff" part) app. nkoh rxchv ibzldw bqmowg skhke sbhaqimy zvhpt brfk ooqfzf xreoz clpnkpjm vlge jounoz mbra lxs
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