54 lines
1.4 KiB
Plaintext
54 lines
1.4 KiB
Plaintext
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{{alias}}( collection, fcn, predicate[, thisArg] )
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While a test condition is true, invokes a function for each element in a
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collection, iterating from right to left.
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The condition is evaluated *after* executing the provided function; thus,
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`fcn` *always* executes at least once.
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When invoked, both the predicate function and the function to apply are
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provided three arguments:
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- `value`: collection value
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- `index`: collection index
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- `collection`: the input collection
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If provided an empty collection, both `value` and `index` are `undefined`.
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Parameters
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----------
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collection: Array|TypedArray|Object
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Input collection over which to iterate. If provided an object, the
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object must be array-like (excluding strings and functions).
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fcn: Function
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The function to invoke for each element in a collection.
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predicate: Function
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The predicate function which indicates whether to continue iterating
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over a collection.
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thisArg: any (optional)
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Execution context for the applied function.
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Returns
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-------
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out: Array|TypedArray|Object
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Input collection.
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Examples
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--------
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> function predicate( v ) { return v === v; };
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> function logger( v, i ) { console.log( '%s: %d', i, v ); };
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> var arr = [ 1, NaN, 2, 3, 4, 5 ];
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> {{alias}}( arr, logger, predicate )
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5: 5
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4: 4
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3: 3
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2: 2
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1: NaN
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See Also
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--------
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