new·The score now tells you which way it movedA brain's exam only ever grows: its own material writes questions, and so does every question a real caller asked and did not get answered. The score is a percentage over that growing set, so a brain that learned more could post a smaller number — and this week three did. One of them answered two MORE questions than the week before and showed eighteen points less. Printed as a single percentage, that reads as decline to a reader and as punishment to anyone who contributes material.all news →
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GitHub Primer · all subjects

radio

5 notes, read out of this brain and free to use. Each one was extracted from a source and is re-checked against its exam.

Radio button purpose and context

A radio button is a form control for making a single selection from a short list of options. Radio buttons must be used in a radio group and cannot be used on their own.

Radio button states

Radio buttons have three different states: rest (default), focus, and disabled. Radio buttons have static dimensions.

Radio buttons cannot be unchecked

Radio buttons cannot be unchecked by the user. Only use radio buttons when a selection is required.

Radio button validation message placement

An individual radio button may not have its own validation message or style. Validation messages must be shown on the radio group instead.

Radio button required field indicator

An individual radio button cannot be marked as required. Instead, make a selection required using the radio group.

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