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