Skip to main content

What is DATA-Binding in Angular? Different types of data binding with details examples and understanding

Hey Guys,

In this blog we are going to learn about data binding in angular with examples.


What is a data binding?
  • Data binding it's allows angular communication between a component and the DOM elements in angular.
  • In angular, we have a total of 4 type of data binding we have.

Different types of data binding are below.
  • Interpolation
  • Property binding
  • Event binding
  • Two-way data binding

Interpolation :- 

  • We can use double curly braces ( {{}} )  for binding data.
  • It's provide communication between the component file to html files.
  • We can use the interpolation to bind dynamic value in html files.
  • Examples :- 
    app.component.ts files


        app.component.html

                         

        Output:

    

Property Binding :- 

  • It's used to help you to set values for properties of HTML elements or directives as well as.
  • Syntax :-  [property]="values"

Example:- 

app.component.ts



app.component.html



Out put :-


Event Binding :- 

  • It's called once we call specific events inside a DOM element.
  • Events are :- (click), (change), etc...
  • Syntax: (eventName)="functionName()"
app.component.ts


app.component.html



Output:- 



Two-way Data Binding:- 
  • It's used for listening to events and updating value simultaneously for both parents and child components.
  • Syntax: [(ngModel)]="values"

app.component.ts


app.component.html



Output:- 






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

techoswag@gmail.com

Comments

Popular posts from this blog

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 ...

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...

Learn About Call(), Apply() and Bind() Method in JavaScript

Hello Guys, In this blog your going to learn about CALL(), APPLY() and BIND() method in JavaScript with details understanding and examples. Invoking a function with a specific this value is possible in JavaScript through call(), apply(), and bind(). These three methods may be comparable in terms of their function, but the way they operate and handle arguments set them apart. call(), apply(), and bind() can be confusing to differentiate, so let's look at how each one differs from one another. Call() :-  Method used to invoke a function with specified this value and given arguments - call(). First argument is this value, followed by any expected arguments. For instance, a case in point: Calling findNames() in this scenario, we set the this value to person, thus causing person.name to equate to this.name within the function. APPLY() :-  Ahead of time, it's sometimes unclear how many arguments will be required when calling a function.  In such instances, the apply() metho...