Angular - Reactive Forms
You want to disable all controls inside a FormGroup named
settingsForm at once. Which is the correct way to do this in Angular?You want to disable all controls inside a FormGroup named settingsForm at once. Which is the correct way to do this in Angular?
hard🚀 Application Q15 of 15
Step-by-Step Solution
Solution:
Step 1: Understand FormGroup disable method
FormGroup has a disable() method that disables all child controls at once.Step 2: Check other options for disabling controls
CallsettingsForm.controls.disable()to disable controls is invalid because controls is an object, not a method. Options A and D do not disable controls but change values.Final Answer:
Call settingsForm.disable() to disable all controls together -> Option CQuick Check:
FormGroup.disable() disables all controls = C [OK]
Quick Trick: Use FormGroup.disable() to disable all controls at once [OK]
Common Mistakes:
MISTAKES- Trying to disable controls by setting values to null
- Calling disable on controls object directly
- Using setValue to disable controls
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