As developers, it is essential to know how to use the essential tools that enable us to create dynamic single page applications. Angular is a popular framework used to create such applications and one of its prominent features is the built-in structural directive, ngIf. NgIf helps us to conditionally render a part of the DOM based on an expression. Leveraging this directive can help us to create dynamic and engaging user interfaces. In this blog post, we will explore how to use ngIf in Angular to create dynamic user interfaces. We will discuss what ngIf is, its syntax, and some use cases. By the end of the post, you should have a good understanding of how to use ngIf in your Angular applications.
Angular Tutorial – 12 – ngIf Directive
What is the use of * in ngIf?
The most popular way to conditionally display an inline template is with the *ngIf directive, as demonstrated in the example below. The default else template is blank.
What is * ngIf in Angular?
In Angular10, the ngIf Directive is used to modify or recreate an HTML element based on an expression. If the expression contained therein is true, the element is added to the DOM; otherwise, it is removed. Syntax: <li *ngIf=’condition’></li>Jun 3, 2021.
How do I use ngIf in Angular 8?
In accordance with the expression, HTML elements can be added or removed using the ngIf Directives.
- @Component({
- selector: ‘ng-if-simple’,
- template: `
- show = {{show}}
-
Text to show
- `
What is the difference between ngIf and * ngIf in Angular?
ngIf is the directive. You must use the * prefix to use it into templates because it is a structural directive (template-based). The abbreviation “syntactic sugar” for the following syntax is *ngIf: template [ngIf]=”condition”>
What does * ngIf mean?
If the expression results in a false value, the ng-if directive eliminates the HTML element. A duplicate of the Element is added to the DOM if the if statement evaluates to true.
How do we use * ngIf?
In Angular10, the ngIf Directive is used to modify or recreate an HTML element based on an expression. If the expression contained therein is true, the element is added to the DOM; otherwise, it is removed. NgModule: Module used by NgIf is: CommonModule. Jun 3, 2021.
What is * ngIf vs ngIf?
ngIf is the directive. You must use the * prefix to use it into templates because it is a structural directive (template-based). The abbreviation “syntactic sugar” for the following syntax is *ngIf: template [ngIf]=”condition”>