64 lines
1.8 KiB
Plaintext
64 lines
1.8 KiB
Plaintext
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{{alias}}( src[, begin[, end]][, mapFcn[, thisArg]] )
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Returns an iterator which iterates from right to left over the elements of
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an array-like object view.
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When invoked, an input function is provided four arguments:
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- value: iterated value
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- index: iterated value index
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- n: iteration count (zero-based)
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- src: source array-like object
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If an environment supports Symbol.iterator, the returned iterator is
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iterable.
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If an environment supports Symbol.iterator, the function explicitly does not
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not invoke an array's `@@iterator` method, regardless of whether this method
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is defined. To convert an array to an implementation defined iterator,
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invoke this method directly.
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Parameters
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----------
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src: ArrayLikeObject
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Array-like object from which to create the iterator.
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begin: integer (optional)
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Starting index (inclusive). When negative, determined relative to the
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last element. Default: 0.
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end: integer (optional)
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Ending index (non-inclusive). When negative, determined relative to the
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last element. Default: src.length.
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mapFcn: Function (optional)
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Function to invoke for each iterated value.
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thisArg: any (optional)
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Execution context.
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Returns
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-------
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iterator: Object
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Iterator.
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iterator.next(): Function
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Returns an iterator protocol-compliant object containing the next
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iterated value (if one exists) and a boolean flag indicating whether the
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iterator is finished.
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iterator.return( [value] ): Function
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Finishes an iterator and returns a provided value.
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Examples
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--------
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> var it = {{alias}}( [ 1, 2, 3, 4 ], 1, 3 );
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> var v = it.next().value
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3
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> v = it.next().value
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2
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See Also
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--------
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