Read full article on the Infragistics blog In this blog post, we will learn about ViewChild and ContentChild in Angular. Essentially ViewChild and ContentChild are used for component communication in Angular. Therefore, if a parent component wants access of child component then it uses ViewChild or ContentChild. Any component, directive, or element which is partContinueContinue reading “Simplifying ViewChild and ContentChild in Angular”
Author Archives: Dhananjay Kumar
How to dynamically create a Component in Angular
You can read full article on the Infragistics blog In this article, we will learn to create a component dynamically. You may need to load a component dynamically in various scenarios such as want to show a popup modal etc. Let us assume that, we have a component as listed below, which we will loadContinueContinue reading “How to dynamically create a Component in Angular”
Step by Step creating Custom Pipe in Angular
Read full article on the Infragistics blog Angular pipes take data as input and transform it to your desired output. For example, using interpolation you are displaying name of the product. Now you want the product name always displayed in the uppercase. You can do this using Angular pipe uppercase. https://gist.github.com/debugmodedotnet/929abeb0c328af3e9a266b49c11a811c In above component, productNameContinueContinue reading “Step by Step creating Custom Pipe in Angular”
How to create Custom Validator for Angular Reactive Forms
Learn full article on the Infragistics blog In this blog post, we will learn to create custom validators in Angular Reactive Forms. If you are new to reactive forms, learn how to create your first Angular reactive form here. Let’s say we have a login form as shown in the listing below. Currently, the formContinueContinue reading “How to create Custom Validator for Angular Reactive Forms”
Hosted 11th free Angular session
On 13 January 2018, geek97 hosted 11th free session on Angular in Gurgaon. You can find detail of meetup hereAround 35 senior Angular Developers attended the meetup and Dhananjay Kumar delivered the sessions. There were two sessions:Component Communications @Input @Output EventEmitterTemp Ref variable Reactive Forms FormControl FormGroupValidation Custom Validation You can learn in details aboutContinueContinue reading “Hosted 11th free Angular session”
Understanding @Output and EventEmitter in Angular
Read full article on the Infragistics blog Angular is based on a one-directional data flow and does not have two-way data binding. So, how do you get a component to emit an event to another component? In Angular, a component can emit an event using @Output and EventEmitter. Both are parts of the @angular/core.ContinueContinue reading “Understanding @Output and EventEmitter in Angular”
Simplifying function expressions and the function statement in JavaScript
Read full article on the Infragistics blog In JavaScript, a function can be created in three possible ways: Function as an expression Function as a statement Arrow functions In this post, we will learn about function expressions and the function statement. Consider the following code: https://gist.github.com/debugmodedotnet/e4b1dc967bc51b6c8dd1ff98d8d88dc6 When you create a function as shown above, itContinueContinue reading “Simplifying function expressions and the function statement in JavaScript”
What are the Call and Apply Methods in JavaScript
Read full article on the Infragistics blog In JavaScript, the apply() and call() methods execute a function in the context (scope) of the first argument you pass to them. Let’s take a look at them in action to learn more. Say that you have an object person as shown below: https://gist.github.com/debugmodedotnet/11ca4e8d58e602ca93813cef93d9601e And in addition, you have aContinueContinue reading “What are the Call and Apply Methods in JavaScript”
Four Ways to Create Objects in JavaScript
In JavaScript, there are four methods to use to create an object: Object literals New operator or constructor Object.create method Class In this post, we will learn each of these methods. Object literals An object literal, also called an object initializer, is a comma-separated set of paired names and values. You can create an objectContinueContinue reading “Four Ways to Create Objects in JavaScript”
What are Template Literals in JavaScript
Read full article on the Infragistics blog In ES6, two types of literals were introduced: Template Literals for string concatenation and expression embedding in a string Tagged Template Literals to tag the Template Literal in a function so the literal can be evaluated in the function Let’s assume that you need to do the stringContinueContinue reading “What are Template Literals in JavaScript”
Dhananjay Kumar 