Once I introduce ngModel into mat-checkbox, the functionality of 'checked' stops working

When I add an ngModel to my mat-checkbox, the checked = "checked" functionality stops working as expected.

The following code will work:

<mat-checkbox name="BlackBeard" ngModel checked = "checked"> Zehahaha? </mat-checkbox>

However, the following code will not work:

<mat-checkbox name="BlackBeard" ngModel checked = "checked"> Zehahaha? </mat-checkbox>

Please note: I am looking for a generic solution that can be used in scenarios where checkboxes are dynamically generated. While binding variables is one option, I prefer a solution that does not require this additional step.

angulartypescriptcheckboxangular-materialangular-ngmodel

Answer №1

NgModel serves as a representation of the input value.

When utilizing NgModel, it is necessary to manage the NgModel value in your TypeScript file like so:

<mat-checkbox name="BlackBeard" [(ngModel)]="checkthis"> Zehahaha? </mat-checkbox>

Within your TypeScript file, declare checkthis as a boolean and allocate a boolean value to it based on your specific logic:

  checkthis:boolean = true;

This will ensure that your checkbox remains checked.

For further reference, please refer to this link.

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