== JavaScript ''while'' loops ==
The ''for'' loop described above works well when you knmow know how many times a particialr particular task needs to be repeated. Clearly there will often be instances where something needs to be repeated until a certain condition is met, with no way of knowing how many repetitions are going to be needed to meet that conditioncriteria . To address this need javaScript JavaScript provides the ''while'' loop. In essense the ''while'' loop repeats a set of tasks until a specified condition is met. The ''while'' loop syntax is as follows:
while (''condition'')
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Exception encountered, of type "Error"
