Working with Checkboxes, Radio Buttons, and Dropdowns
When implementing a 'Select All' checkbox, what's the recommended way to handle indeterminate state?
The indeterminate property is specifically designed for this use case. When some but not all checkboxes in a group are checked, the 'Select All' checkbox should be in an indeterminate state. Key points: 1) indeterminate is a visual state only - it doesn't affect the checked property, 2) Must be set via JavaScript - no HTML attribute equivalent, 3) Indicates a third 'partially checked' state, 4) Improves UX by providing clear feedback about partial selections. This creates a more intuitive interface for managing multiple selections.