A step-by-step guide on dynamically altering button colors in Angular 2

Struggling to dynamically change the color of my button, any suggestions?

<a  class="button buttonaquacss button-mini button-aqua text-right pull-right" (click)='send(button,detail.profile_id)' #button [ngStyle]="{'background-color': color}"><span><i class="icon-plus-sign"></i>{{detail.innerHTML}}</span></a>

if (detail.connection_status == '') {
    detail.innerHTML = "connect";
    this.color = "red";
}

send(button, index): void {

    var str = localStorage.getItem('social');
    var loc = JSON.parse(str);
    var id = loc.profile_id;
    var formdata = { received_id: index, sent_id: id }

    this.color = 'blue';
    var headers = new Headers();

    headers.append('Content-Type', 'application/x-www-form-urlencoded')
    this.http.post('http://localhost/a2server/index.php/requests/sendrequest/', formdata, { headers: headers })
        .subscribe(
            response => {
                if (response.json().error_code == 0) {
                    button.innerHTML = "Pending";
                    button.disabled = true;
                    this.color = "#127bdc";
                }
                else {
                    button.innerHTML = "Unable to send request";
                }
        });


}

Looking for assistance on dynamically changing button color.

Answer №1

One way to enhance your styling is by utilizing the ngStyle directive:

<a  class="button buttonaquacss button-mini button-aqua  text-right pull-right" 
    [ngStyle]="{'background-color':  color}">
  (...)
</a>

Answer №2

One straightforward approach is to utilize the ngStyle directive (refer to https://docs.angularjs.org/api/ng/directive/ngStyle) in your AngularJS application. Implement the directive in this manner:

ng-style="{color: myColor}"

Make sure to link it to your controller.

Answer №3

One alternative approach to resolving this issue is implementing a conditional class that supersedes the default color by utilizing [class.newColor]="errorThrown". This strategy aligns with the concept of keeping your functional code distinct from your style-related code.

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