A slider or track bar is a
graphical control element with which a user may set a value by moving an indicator.
In some cases the user may also click on a point on the slider to change the setting. It is different from a
scrollbar
A scrollbar is an interaction technique or widget (GUI), widget in which continuous text, pictures, or any other content can be Scrolling, scrolled in a predetermined direction (up, down, left, or right) on a computer display, window (computing) ...
in that it is not continuous but used to adjust a value without changing the format of the display or the other information on the screen.
Its most popular use is for viewing and jumping to a playback position in
media player software.
Usage with progress bars
Sliders are also combined with
progress bars in the playback of
streaming media
Streaming media refers to multimedia delivered through a Computer network, network for playback using a Media player (disambiguation), media player. Media is transferred in a ''stream'' of Network packet, packets from a Server (computing), ...
over a network connection (e.g., YouTube videos) in order to show the content buffering position versus the playback position. This is done by superimposing a colored shaded area (progress bar) on top of the slider, indicating whether the user can "jump" forward or not.
References
External links
Yahoo! UI LibraryASP.NET AJAX Control Toolkitscript.aculo.us wiki
Graphical control elements
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