How to alter the HTML view in Angular 2 after it has been processed

Question

How to alter the HTML view in Angular 2 after it has been processed

Here is some Angular 2 code snippet:

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

@Component({
  selector: 'app-root',
  template: 'Waiting on port ',
})
export class AppComponent {
}

I want to dynamically add the text "3000" to the template output. How can I achieve this?

The desired final output should be "Waiting on port 3000"

UPDATE: To clarify, I am looking for a solution that involves modifying the HTML before it is rendered on the frontend. Essentially, I need to manipulate the HTML after Angular 2 has processed all the binding details in the template.

javascript angular typescript

Answer 1

Answer №1

@Component({
  selector: 'app-root',
  template: 'Listening on port {{port}}',
})
export class MainComponent {
  port:number;
  initializePort() {
    this.port = 8080;
  }
}

Answer 2

@Component({
  selector: 'app-root',
  template: 'Listening on port {{port}}',
})
export class MainComponent {
  port:number;
  initializePort() {
    this.port = 8080;
  }
}

Answer 3

Answer №2

Building on the insight provided by John Doe, to ensure that a method is triggered when the component is initialized, you can leverage ngOnInit. This method is described as being "called after data-bound properties of a directive are initialized" in the Angular documentation.

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

@Component({
  selector: 'app-main',
  template: 'Listening on port {{serverPort}}',
})
export class MainComponent implements OnInit {
  serverPort:number;
  ngOnInit(): void {
    this.serverPort = 8080;
  };
}

OnInit must be imported in your code.

Answer 4

Building on the insight provided by John Doe, to ensure that a method is triggered when the component is initialized, you can leverage ngOnInit. This method is described as being "called after data-bound properties of a directive are initialized" in the Angular documentation.

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

@Component({
  selector: 'app-main',
  template: 'Listening on port {{serverPort}}',
})
export class MainComponent implements OnInit {
  serverPort:number;
  ngOnInit(): void {
    this.serverPort = 8080;
  };
}

OnInit must be imported in your code.

How to alter the HTML view in Angular 2 after it has been processed

Answer №1

Answer №2

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