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YUI Library Examples: Slider Control: Basic Vertical Slider

Slider Control: Basic Vertical Slider

This example demonstrates a simple vertical implementation of the YUI Slider Control. Some characteristics of this implementation include the following:

  • The slider range is 200 pixels.
  • Custom logic is applied to convert the current pixel value (from 0 to 200) to a "real" value. In this case the "real" range is 0 to 300.
  • The value is set to 30 after the control is initialized
  • Once the slider has focus, the up and down keys will move the thumb 20 pixels (changing the "real" value by 30).
  • When the slider value changes, the UI is updated. The title attribute of the slider background is updated with the current value, and the text field is updated with the current "real" value. These techniques can help inform assistive technologies (like screen reader software) about the slider's current state.

Pixel value: 0

Converted value:

Building a Vertical Slider

You supply your own markup for the slider. Keep in mind the following points about markup for YUI Slider Control implementations:

  • The thumb element should be a child of the slider background
  • The tabindex attribute lets this element receive focus in most browsers.
  • We use the Sam skin for a 200px vertical slider and use the thumb-bar.gif thumb image from the build assets
  • If the slider background can receive focus, the arrow keys can be used to change this slider's value.
  • a performance bottleneck when animating the thumb's position in IE.
  • Don't apply a CSS border to the slider background



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