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String Interpolation

String Interpolation in Angular

String-Interpolation is the prossess where a value inside mustach-tags {{}} is caluclated and later replaced as string on the view (.html).

In angular whatever variable that you have taken in the logic file (.ts) can be fetched and even manipulated with the help of mustache-tags using "String Interpolation".

-- Mustache tags can be said to be placeholders yeielding final value after calculation.

Practical Example of "String Interpolation"

Please follow the mentioned steps:

  1. Create a compennt named 'home'
  2. Add the home component in the app.component.html file removing all boilerplate code there.
  3. Create 2 strings, 2 numbers, 1 array of colors, and 1 array containing information about 5 students - with all these variables we will demonstrate String Interpolation.



<p>{{string1 + string2}}</p>


<p>{{num1 + num2}}</p>

<p>{{num1 * num2}}</p>


<p *ngFor="let x of colors">{{x}}</p>


<p *ngFor="let x of students">{{x.name}}, {{x.country}}, {{x.age}}</p>


import { Component, OnInit } from '@angular/core';

  selector: 'app-home',
  templateUrl: './home.component.html',
  styleUrls: ['./home.component.css']
export class HomeComponent implements OnInit {

  string1: String = 'Peter';
  string2: String = 'Martin';
  num1: Number = 5;
  num2: Number = 10;
  colors = ['red', 'green', 'blue', 'orange', 'pink'];
  students = [
    {name: 'Peter', country: 'USA', age: 29},
    {name: 'Lily', country: 'UK', age: 19},
    {name: 'Robert', country: 'Canada', age: 47},
    {name: 'Rose', country: 'UK', age: 17},
    {name: 'Albert', country: 'Austria', age: 33}

  constructor() { }

  ngOnInit() {

  1. You'll get the following result.

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