What is the method for retrieving a page's title in TypeScript?

Can someone help me with how to access the page title and save it to a variable using TypeScript in an Angular project?

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

@Component({
    selector: 'home',
    templateUrl: './home.component.html'
})
export class HomeComponent implements OnInit {

    title: string;

    ngOnInit() {
        console.log("Title is " + this.title);
        this.title === document.title;
    }
}

However, I keep receiving "Title is undefined" in the console.

I also tried:

 title: string;

    ngOnInit() {
        this.title === this.titleService.getTitle();
        console.log("Title is " + this.title);
    }
    public constructor(private titleService: Title) { }
    getTitle() {
        this.titleService.getTitle();
    }

Unfortunately, the outcome remains unchanged. What is the proper way to retrieve the page title?

Answer №1

It appears that there are multiple errors in your code.

  1. The === operator is meant for Strict Equality Comparison, not for assigning a value to a variable (more information about the === operator can be found here: Difference between == and === in JavaScript).
  2. You are attempting to display a variable before trying to assign its value, which may lead to unexpected results.

To correct these issues, consider updating your code to:

 ngOnInit() {
      this.title = document.title
      console.log(this.title)
 }

or alternatively:

ngOnInit() {
    this.title = this.titleService.getTitle();
    console.log("Title is " + this.title);
}

Answer №2

One helpful tool for setting page titles in Angular is the Title provider from @angular/platform-browser. For detailed instructions, check out this article.

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