Αποτελέσματα Αναζήτησης
In Angular 4.x.x. You can use ngIf in four ways to achieve a simple if - else procedure: Just use If. <div *ngIf="isValid">. If isValid is true. </div>. Using If with Else (please notice to templateName) <div *ngIf="isValid; else templateName">. If isValid is true.
9 Μαρ 2023 · The Angular ngIf is a Structural Directive that allows us to completely add or remove DOM Elements based on some condition. In this Tutorial, let’s learn what ngIf is and how to use it in Angular. We will show you how to add or remove elements using an example. We will also look at the optional else & then clause using the ng-template.
Definition and Usage. The ng-if directive removes the HTML element if the expression evaluates to false. If the if statement evaluates to true, a copy of the Element is added in the DOM. The ng-if directive is different from the ng-hide, which hides the display of the element, where the ng-if directive completely removes the element from the DOM.
18 Ιουν 2019 · Let us check out the ngIf syntax: <div *ngIf="condition">Content to be rendered when the condition is true.</div>. Using ngIf in Angular is very easy, as you can see we have declared the ngIf with (*) along with the condition. If the condition is true, then the template will be rendered.
NgIf. link. A structural directive that conditionally includes a template based on the value of an expression coerced to Boolean. When the expression evaluates to true, Angular renders the template provided in a then clause, and when false or null, Angular renders the template provided in an optional else clause.
7 Σεπ 2021 · You use the *ngIf directive in Angular to show some data or item based on some condition. Let's say we are calling an API. We show some message that the data is loading while the application fetches the data from the API, because it can take some time depending on the server.
11 Μαΐ 2018 · NgIf is very useful if you want to show or hide parts of your application based on a condition. For example, we could have a simple flag inside of our component: selector: 'app-example', templateUrl: './example.component.html', styleUrls: ['./example.component.css'], show: boolean = true.
