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JavaScript has a pair of timeout methods
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// Call setTimeout and assign a handle:
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yourID = setTimeout(exp, msecs);
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// Abort process started by setTimeout:
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clearTimeout(yourID);
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setTimeout starts a timer that causes expression exp to be evaluated after a time interval of msecs milliseconds
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These methods can be used to animate text or images, or make a display change after a given time interval
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Also to start a daemon, which monitors what's going on!
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Note setTimeout does not start a loop, just a single timing. Thus clearTimeout need not be called unless abnormal termination is required
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If you want a loop, ensure exp restarts a new setTimeout
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