The search functionality in Angular 2 using Typescript is not working properly, as the button is not triggering the

I've been working on developing a search feature that utilizes text input to look up information about corporations through a government API (https://github.com/usagov/Corporate-Consumer-Contact-API-Documentation).

Within my project, I have an HTML page named contact-list.component.html which includes a button element. When this button is clicked, it triggers a function located in the component file (contact-list.component.ts). The goal of this function is to utilize the inputted string for conducting a search using a service I've incorporated, with the intention of displaying the results in an array that can be bound to a table.

contact-list.component.html


       <div class='row'>
        <div class='col-md-2'>Enter Corporation Name:
        </div>
        <div class="col-md-4">
            <input type="text"
            [(ngModel)] = 'searchString'/>
            <div><button class='btn btn-primary' ng-click="ContactListComponent.getResults(searchString)">Search</button>
            </div>
        </div>
    </div>
    <div class='row'>

contact-list.component.ts


    getResults(_searchString: string): any{

this._contactService.getContacts(this._searchString)
.subscribe(contacts => this.contacts = contacts,
     error => this.errorMessage = <any>error);

}

However, upon testing, I've encountered an issue where no outputs are displayed in the console upon entering text and clicking the button. Even when I simply use console.log("foo"); within the getResults() method, nothing appears in the console after pressing F12. Any insights on what might be causing this discrepancy?

Answer №1

ng-click in Angular 1 should be replaced with (click)="...".

Instead of using

"ContactListComponent.getResults(searchString)"
, simply use "getResults(searchString)" since you're already within the correct component.

Furthermore, there is no need to pass searchString as it can be accessed directly in the component using this.searchString.

Therefore, the accurate syntax should be :

(click)="getResults()"

...and inside your component :

getResults(): any{
    this._contactService
        .getContacts(this.searchString) // Accessible due to [(ngModel)]="searchString" 
        .subscribe(...);
}

Answer №2

After seeking assistance from a friend, the problem was successfully resolved. Surprisingly, the issue did not stem from any of the previously identified files. Upon closer inspection, it became evident that I had utilized selectors excessively across various component areas within my application. The solution came in the form of changing the component selector property in the app.component.ts file to 'app-root' and invoking it differently in the app.component.html. This oversight turned out to be quite fundamental, yet easily missed. Many thanks to those who took the time to investigate my predicament.

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