Files
lodash/collection/forEachRight.js
2015-02-20 00:57:26 -08:00

32 lines
1.1 KiB
JavaScript

var arrayEachRight = require('../internal/arrayEachRight'),
baseEachRight = require('../internal/baseEachRight'),
bindCallback = require('../internal/bindCallback'),
isArray = require('../lang/isArray');
/**
* This method is like `_.forEach` except that it iterates over elements of
* `collection` from right to left.
*
* @static
* @memberOf _
* @alias eachRight
* @category Collection
* @param {Array|Object|string} collection The collection to iterate over.
* @param {Function} [iteratee=_.identity] The function invoked per iteration.
* @param {*} [thisArg] The `this` binding of `iteratee`.
* @returns {Array|Object|string} Returns `collection`.
* @example
*
* _([1, 2]).forEachRight(function(n) {
* console.log(n);
* }).join(',');
* // => logs each value from right to left and returns the array
*/
function forEachRight(collection, iteratee, thisArg) {
return (typeof iteratee == 'function' && typeof thisArg == 'undefined' && isArray(collection))
? arrayEachRight(collection, iteratee)
: baseEachRight(collection, bindCallback(iteratee, thisArg, 3));
}
module.exports = forEachRight;