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How to show/hide data when the particular condition is true in AngularJS ?

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  • Last Updated : 18 Nov, 2020

In AngularJS, in order to hide or show data or content, we can use *ngIf structural directive. By using this, we can evaluate conditions and then *ngIf based on the condition displays the content. For example, if the condition for *ngIf is true then the content will be displayed and if the condition is false then the content is not displayed.


  • In order to give a lucid and elaborate view, I’ll explain the concept using an example.
  • Consider we have an array of objects in .ts file and the objects in the array contain a list of technical and non-technical companies.
  • The objective of this experiment is to display the data for all the technical companies and to hide all the non-technical companies.
  • In order to traverse through the array, we will use the *ngFor directive in .html file.
  • Once you are done with the implementation start the server.




import { Component } from '@angular/core';
  selector: 'my-app',
  templateUrl: './app.component.html',
  styleUrls: [ './app.component.css' ]
export class AppComponent  {
  companies = [
      name: "Microsoft",
      isTechnical  : true,
      name: "GeeksForGeeks",
      isTechnical : true
      name: "Netflix",
      isTechnical : false
      name: "TCS",
      isTechnical : true



import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { FormsModule } from '@angular/forms';
import { AppComponent } from './app.component';
  imports:      [ BrowserModule, FormsModule ],
  declarations: [ AppComponent ],
  bootstrap:    [ AppComponent ]
export class AppModule { }



    <li *ngFor="let company of companies">
        <i *ngIf="company.isTechnical"> {{}} </i>

Output: You can clearly see the 3rd item is hidden because its condition is false. In order to give a more-visible example, I left it blank. 

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