What are pros and cons of Angular?

What are pros and cons of Angular?

The Advantages and Disadvantages of Angular

• MVC Architecture implementation.
• Enhanced Design Architecture.
• Modules.
• Services and Dependency Injection (DI)
• Custom directives.
• TypeScript: better tooling, cleaner code, and higher scalability.
• Limited SEO options.
• Angular is verbose and complex.

How can I use ngFor and ngIf together?

Use ngFor and ngIf on same element i.e., if ngIf is true. So in this case to use *ngIf and *ngFor on same element, place the *ngIf on a parent element that wraps the *ngFor element. In the above code we are telling angular that execute *ngIf first, If the condition is true then repeat the HTML using *ngFor .

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 does ngIf work Angular?

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.

What is the difference between ngIf and ngFor?

Basic Difference between ng-if, ng-show and ng-hide The ng-if directive removes or recreates a portion of the DOM tree based on an expression, Instead of hiding it. The ng-hide directive shows or hides the given HTML element based on the expression provided to the ng-hide attribute .

What is ngIf and ngFor in angular?

Built-in Structural Directives Angular has the following structural directives: NgIf — conditionally creates or destroys subview from the template. NgFor — repeat a node for each item in a list. NgSwitch — a set of directives that switch between alternatives.

What is the use of ngFor?

NgFor is a structural directive, meaning that it changes the structure of the DOM . It’s point is to repeat a given HTML template once for each value in an array, each time passing it the array value as context for string interpolation or binding.

Why * is used in ngFor?

When we reviewed the NgFor and NgIf built-in directives, we called out an oddity of the syntax: the asterisk (*) that appears before the directive name. The * is a bit of syntactic sugar that makes it easier to read and write directives that modify HTML layout with the help of templates.

How to use *ngif and *ngfor on same element in angular?

So in this case to use *ngIf and *ngFor on same element, place the *ngIf on a parent element that wraps the *ngFor element. In the above code we are telling angular that execute *ngIf first, If the condition is true then repeat the HTML using *ngFor.

What is the difference between *ngfor and *ngif structural directives?

The *ngIf structural directive will remove or show an element based on whether the variable it is bound to evaluates to true or false The *ngFor structural directive will loop over an array of data and create a DOM element for each element in the array, stamping it with the specific values for each array element (if interpolations are being used)

How to execute *ngif first then repeat the HTML in angular?

In the above code we are telling angular that execute *ngIf first, If the condition is true then repeat the HTML using *ngFor. But we are adding one extra div element which will be added to the DOM if ngIf is true. To avoid this we can use ng-container element.

What is ng-container in angular and how to use it?

Angular’s documentation recommends that when using any structural directive, you should place them on a root element. The ng-container is Angular’s way of giving you a logical root element to apply a structural directive. Placing a structural directive on a root element is not a hard guideline to follow when using elements such as an or .