What is Resolver in Angular with Examples.

What is Resolve in Angular?

Well, essentially Resolve is a tool that allows developers to load data that’s relevant to a particular component on a specific route. It does this by resolving optional comma-delimited dependencies before it triggers a router change. This ensures that necessary data is available before entering the new route, hence the name Resolve. Essentially, Resolve is a great way to optimize your app’s load times and user experience.

Using the Resolve feature in Angular enables the preloading of data before activating a route. It serves as a valuable tool for retrieving data from an external source prior to presenting a component's content. With Resolve, data availability can be established ahead of rendering the component, preventing any empty or flashing content in the page.

How does Resolve work?

The initial step for utilizing Resolve is to establish a resolver function, which fetches the data from an outside source and relays it back to the component. Integration of the resolver function into the route definition is done within the app-routing.module.ts file.

For Examples:

DataService is responsible for pulling the data and is injected into DataResolver, which is the defined resolver function in this instance.

To update the app-routing.module.ts file, be sure to incorporate the resolver function into the route definition.

The data object in the HomeComponent matches the key of "data" in the resolve property that is added to the home component route through the resolver function.

To use the resolved data, you must update the HomeComponent.

If you guys have any query then you can drop a mail to us on this mail id:

techoswag@gmail.com

Comments

Different between ``===`` and ``==`` operators in JavaScript

Hello Guys, In this blog we are going to learn about "===" and "==" different with details understanding and examples. JavaScript operators that you might have stumbled upon as a developer include "===", "==". JavaScript's "==" operator is commonly utilized for loose comparison purposes. It functions by converting both of the values to a common type and then comparing them for equality. Here's an example: The comparison operator "==" transforms the value of "17" from a string to a number before determining if the values match. Consequently, if both versions of the data share the same properties and values, the comparison is marked as valid and returns true. The results of the "==" operator can occasionally be surprising, including: The comparison returns true when the "==" operator converts the empty string to the number 0 and compares it to the number 0. This can result in bugs, so ...

Configure and Build Angular application for different environments like QA and Staging

Generally in the angular application by default, we have two environment 1) Development 2) Production Environment. But In some cases, we need to add other environments for our application like QA and staging environment. So let's see how we can add multiple environments in angular application for that we have to perform some steps. Step 1:- Custom Environment File - Here For every target environment, we have to create a new file under the environment folder here i have created two files evnironment.qa.ts and environment.staging.ts Step 2:- Custom Environment Setting - Here now you have to configure your environment name and new environment API URL and other settings For Example:- Step 3:- Need to Update the angular.json file - Now in the angular project you can find the angular.json file. in that file, you have to configure your new environment like below Here I have configure for QA environment St...

What is the Lazy-loading in Angular and Different between Old syntax and New Syntax of Lazy-loading with examples

Hey Guys, In this blog we are going to learn about How we can use Lazy-loading in angular with examples. We are also going to learn the different syntax of lazy loading in angular . Lazy loading is used to load the specified module once the routes match. It will load the modules once use access that particular section or modules in our application. Using lazy loading will improve the performance of our application and also decrease the load time of our application. Using lazy-loading will help to reduce the bundle size of the application. Lazy -loading Old syntax in angular 7 or lower version { path: "feature", loadChildren:'./feature-module/feature-module.module#FeatureModuleModule' }, Lazy -loading new syntax in angular 8+ { path:'feature', loadChildren:() => import...

TechoSwag

Search This Blog