Angular now supports control flow syntax (introduced in Angular 17), which allows you to write cleaner and more expressive conditional logic directly in templates. This new syntax enables …

To display a template when expression evaluates to false, use an else template binding as shown in the following example. The else binding points to an <ng-template> element labeled #elseBlock. The template can be defined anywhere in the component view, but is typically placed right after ngIf for readability.

2023年10月18日 · NgIf allows us to show and hide content based on the state of a piece of data. We simply pass it an expression to evaluate either truthy or falsy - and the content is made created or destroyed based on the result. Learn all about Angular’s new @if and @else control flow syntax! What is NgIf? NgIf or [hidden]? What is NgIf?

When chaining ngIf, the <ng-template> which is addressed by a previous else does not support another ngIf. A nested <ng-container> tag allows to insert the next condition.

2018年5月11日 · In this tutorial, we are going to take a look at the ngIf directive. We will discover how we can use it to show or hide parts of our angular application. Also, we will find out how …

The shorthand syntax *ngIf expands into two separate template specifications for the "then" and "else" clauses. For example, consider the following shorthand statement, that is meant to show a loading page while waiting for data to be loaded.

2023年3月9日 · 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.

2019年11月10日 · We can change the then or else template references dynamically at run time by taking advantage of these [ngIfThen] and [ngIfElse]. Go through the below article to understand it further

2020年2月10日 · In this post, you will learn how to use the if directive to handle comparisons in Angular. According to the Angular API, the ngIf directive is a structural directive that …

2025年2月16日 · This article explains the functionality and usage of *ngIf, along with its variations such as *ngIf else, *ngIf then else, and ng-template.