JSArray.Filter

Returns false if it finds an element in the array that does not satisfy the provided testing function. Otherwise, it returns true.

Syntax

filteredArray = JSArray.Filter ( a, callbackFn )

Parameters

• The a parameter contains the native Javascript array on which the operation will be performed.
• The callbackFn parameter specifies a function to execute for each element in the array. It should return a true value to indicate the element passes the test, and a false value otherwise. The function is called with the following arguments:
  • element
    The current element being processed in the array.
  • index
    The index of the current element being processed in the array.
  • array
    The array every() was called upon.

Example

Import JSArray From "lib/lang/array.bas"

Dim numbers As Object
numbers = JSArray.Create(5, 27, 18, 9, 4, 22, 20)

Dim filtered As Object
filtered = JSArray.Filter(numbers, @RangeFilter)

Print filtered

Function RangeFilter (element)
    RangeFilter = element >= 15 And element <= 25
End Function

Output

18,22,20

See Also

JSArray.Create
Javascript - Array.filter()