What is interpolation in angular ?

Templates always need text or string to be dynamic at runtime. So angular given us

Interpolation technique to title, username, error messages etc

We put inside {{text }} double curly braces

Class file

userName = “Anil”

Template

Welcome, {{userName}}

Some time we need maths expression

Conditions

Real Count Wins {{ total + 56 == 200 ? “Winner”: “Loser”}}

Can’t use javascript expression

+= , new , instanceof , typeof , ;

Angular runs template expressions after every change detection cycle runs.

A Rest api is accessible by any server path that communicates to the server from any client browser in case of angular. Angular provides us http service of Http module. Service have feature to request, error handling, interceptor, Rxjs observables and operators.

We need to Inject http module in the…

Component is an element of the Angular app. They are the main building blocks. Each component is a type of directive. Component is made of class with Component metadata, html template, css selector and optionally css style apply to html template. Component have lifecycle hooks.

Cli command

ng g c…

ACHARYA ANIL SURYAVANSHI

Software Engineer | Bharat Swabhiman Patanjali Social Activist | Speaker | Motivator | Yoga Trainer

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