Polaris VueRange slider
A range slider is an input field that merchants can use to select a numeric value within a given range (minimum and maximum values).
Props
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Slots
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Events
Best practices
Range sliders should:
- Always be used with a label, even if that label is
hidden. - When a label is visible, it should clearly communicate the purpose of the range input and its values (min, max, step, value)
- Be labeled as “Optional” when you need to request input that’s not required
- Validate input as soon as merchants have finished interacting with a field (but not before)
- Always be used with two text field components when range slider has dual thumbs, to provide accessible alternatives to both the lower and upper thumbs
Content guidelines
Range label
A label is a short description of the requested input. Labels are not instructional text but they should be meaningful and clearly indicate what is expected. Labels should be:
- Placed above the form field
- Short and succinct (1–3 words)
- Written in sentence case (the first word capitalized, the rest lowercase)
Designating optional fields
Try to only ask for information that’s required. If you need to ask merchants to provide optional information, mark the field optional by placing the text “(optional)” at the end of the field’s label. Don’t mark required fields with asterisks.
Help text
Help text provides extra guidance or instruction to people filling out a form field. It can also be used to clarify how the information will be used. As with all form content, help text should be succinct and easy to read.
Validation error messages
Error messages should:
- Clearly explain what went wrong and how to fix it
- Be short and concise, no more than a single sentence
- Use passive voice so merchants don’t feel like they’re being blamed for the error
Related components
- To collect a number value as a text input, use the text field component
Accessibility
The range slider provides a large click and tap target for the slider thumbs. Merchants can also tap or click on the slider track to move the closest slider thumb.
Single-thumb slider
The default range slider component uses the ARIA 1.1 slider pattern to build upon the default HTML <input type="range">. The required label prop provides a label for the field that’s conveyed to assistive technologies when it receives focus. When the slider is used, the value prop should update visually and programmatically to reflect the current value.
To consistently provide the current value to assistive technologies, use the min and max props to provide the minimum and maximum values for the slider.
Dual-thumb slider
The dual-thumb range slider component uses the ARIA 1.1 slider (multi-thumb) pattern. However, the pattern isn’t consistently supported by screen readers, especially on mobile devices. Because of this, it’s best to pair the dual-thumb slider with a set of text fields for each value, or to provide another accessible method for entering information.
Keyboard
- To move focus to a slider thumb, press the tab key to move forward and or shift + tab to move backward
- When a thumb has focus, use the up and down or left and right arrow keys to move the thumb and update the associated value.