The expression "routerlink" in Angular 9 is not recognized,

Currently, I am in the process of developing an Angular 9 application and have encountered two challenging issues.

Firstly, as I navigate through the routes using the navbar, I notice an error message in the console stating "Syntax error, unrecognized expression: /about". Despite this error, the route changes successfully. I have attempted various solutions to resolve this issue without success.

Error Message: Syntax error, unrecognized expression: /about

Secondly, on the landing page of my application, there is a section where the content of the h1 tag dynamically changes with the help of data attributes such as data-period and data-type. However, when I navigate away from the landing page and return, the h1 data array stops updating until I manually refresh the page. You can view the code snippets related to these issues in my Github repository. Below are excerpts from my code:

<nav class="navbar navbar-expand-lg navbar-light bg-light header-sticky">
    <!-- Navbar Code Here -->
</nav>

Module.ts:

import { NgModule } from '@angular/core';
   // Module Code Here

Landing Page HTML:

<div class="main-banner item-bg-one" id="home">
    <!-- Landing Page HTML Code Here -->
</div>

app.module.ts

import { BrowserModule } from '@angular/platform-browser';
   // App Module Code Here

ClientModule.ts

import { NgModule } from '@angular/core';
   // Client Module Code Here

Answer №1

When working on the initial section, it's important to eliminate the href="#about" code as combining href and routerLink is not recommended. Typically, Href is used for external links.

In regards to the second part, Angular may not be recognizing your modifications. To address this, you can manually trigger a check for changes like so:

Add the following import statement to your components:

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

Add to your constructor:

private changeDetector: ChangeDetectorRef

Remember to refresh after making any updates or changes.

// notify Angular to check for updates
this.changeDetector.detectChanges();

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