It understands array length (note that JavaScript arrays are sparse and dynamic, so length != num of defined elements, and the length of an array can be set with length property, not just queried with it)
It understands array length (note that JavaScript arrays are sparse and dynamic, so length != num of defined elements, and the length of an array can be set with length property, not just queried with it)

ackrause/javascript-koans,ackrause/javascript-koans