Angular 10 DemicalPipe API

Last Updated : 04 Aug, 2021

In this article, we are going to see what is DemicalPipe in Angular 10 and how to use it. The DemicalPipe is used to format a value according to digit options and locale rules.

Syntax:

{{ value | number}}

NgModule: Module used by DecimalPipe is:

CommonModule

Approach:

Create an Angular app to be used.
There is no need for any import for the DecimalPipe to be used.
In app.component.ts define the variable that takes decimal value.
In app.component.html use the above syntax to make the date element.
Serve the angular app using ng serve to see the output.

Parameters:

Value: It takes a string value that is converted to a decimal according to the conditions using the decimal pipe.

Example 1:

app.component.ts

import { Component, OnInit } from '@angular/core'; 
  
@Component({ 
    selector: 'app-root', 
    templateUrl: './app.component.html'
}) 
export class AppComponent { 
    pi: number = 2.33; 
}

app.component.html

<p> 
    Number: 
    {{pi | number}} 
</p> 
    
<p> 
    <!-- In this '4.1-5' means 4 digits before .  
         and 1-5 digits after . depending 
         upon given digit -->
    Number with 4 digits: 
    {{pi | number:'4.1-5'}} 
</p> 

Output:

Example 2:

app.component.ts

import { Component, LOCALE_ID } from '@angular/core'; 
  
@Component({ 
    selector: 'app-root', 
    templateUrl: './app.component.html'
}) 
export class AppComponent { 
    num: number = 20*4; 
}

app.component.html

<p> 
    Number: 
    {{num | number}} 
</p> 
  
<p> 
    <!-- In this '4.2' means 3 digits before .  
         and 2 digits after . which is 80-->
    Number with 3 digits: 
    {{num | number:'3.2'}} 
</p> 

Output:

Reference: https://angular.io/api/common/DecimalPipe

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