Wednesday, January 25, 2023

Angular: How to check disabled form control(s)

Checking disabled form controls in Angular is a common requirement when building forms. However, it can be tricky to determine whether a form control is disabled or not, especially if you have a complex form with many controls.

In Angular, you can check if a form control is disabled by using the disabled property of the form control. The disabled property is a boolean value that will be true if the form control is disabled, and false if it is not.

Here is an example of how you can check if a form control is disabled in an Angular template:

And in the component you can disable the form control by using the disable() method

Alternatively, you can also use the status property of the form control to check if the form control is disabled or not. The status property of the form control will be 'DISABLED' if the form control is disabled, and 'VALID' or 'INVALID' if it is not.

You can also use the ngClass directive to apply a CSS class when the form control is disabled

Please note that you should use form.get() only if you are using the FormGroup API and formControlName directive, if you are using FormControl API you should use formControl.disabled to check the status of the form control.

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