Does ngIf work on Div?

In the case of container elements, if there is no container available for the section that we want to show or hide, then we don’t have to create a container div just to be able to apply ngIf . Instead, we can apply ngIf on top of the ng-container directive.

What is * ngIf?

Overview. The ngIf directive removes or recreates a portion of the DOM tree based on an {expression}. If the expression assigned to ngIf evaluates to a false value then the element is removed from the DOM, otherwise a clone of the element is reinserted into the DOM.

What is * ngIf and how does it work?

NgIflink. 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.

Can you use NgClass and class?

You can use both class and ngClass as the first one gives you the opportunity to apply a class that you want to implement in all cases under any circumstances and the later to apply classes conditionally.

Can we use ngFor and ngIf in same div?

In Angular, we cannot use two structural directives on the same element. i.e., we cannot place *ngFor,*ngIf together on same element.

What is difference between * ngIf and ngIf?

What is the difference between ngIf and *ngIf in Angular? ngIf is the directive. Because it’s a structural directive (template-based), you need to use the * prefix to use it into templates. *ngIf corresponds to the shortcut for the following syntax (“syntactic sugar”):

What is the difference between ngIf and * ngIf?

What is * ngFor in Angular?

*ngFor is a predefined directive in Angular. It accepts an array to iterate data over atemplate to replicate the template with different data. It’s the same as the forEach() method in JavaScript, which also iterates over an array.

How do I write an ngIf condition?

AND condition in *ngIf We can use multiple conditions in *ngIf with logical operator AND (&&) to decide the trustworthy of *ngIf expression. If all conditions are true, then element will be added to the DOM.

How do you apply NgClass based on condition?

You can use [ngClass] or [class. classname], both will work the same….The CSS classes are updated as follows, depending on the type of the expression evaluation:

  1. string – the CSS classes listed in the string (space delimited) are added.
  2. Array – the CSS classes declared as Array elements are added.

Can we use NGIF and NgClass together?

javascript – ng-if and ng-class-even/odd doesn’t work well together and won’t get expected outout – Stack Overflow. Stack Overflow for Teams – Start collaborating and sharing organizational knowledge.

Can we have two ngIf in Angular?

No. We can simply pass else template *ngIf directive as shown below. And this template can be defined anywhere in the component view as shown below.