The JavaScript exception "Invalid array length" occurs when specifying an array length that is either negative, a floating number or exceeds the maximum supported by the platform (i.e. when creating ...

ArrayFixed is a fixed length sparse JavaScript array. The main advantage of a fixed length sparse array, is that we maintain a count along with the array length.

Functional programming with arrays Although JavaScript’s arrays are very capable out of the box, the functional paradigm improves the clarity and maintainability of array code.