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32 lines
805 B
JavaScript
32 lines
805 B
JavaScript
var map = require('./map'),
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property = require('../utility/property');
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/**
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* Gets the property value of `path` from all elements in `collection`.
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*
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* @static
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* @memberOf _
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* @category Collection
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* @param {Array|Object|string} collection The collection to iterate over.
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* @param {Array|string} path The path of the property to pluck.
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* @returns {Array} Returns the property values.
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* @example
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*
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* var users = [
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* { 'user': 'barney', 'age': 36 },
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* { 'user': 'fred', 'age': 40 }
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* ];
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*
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* _.pluck(users, 'user');
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* // => ['barney', 'fred']
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*
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* var userIndex = _.indexBy(users, 'user');
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* _.pluck(userIndex, 'age');
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* // => [36, 40] (iteration order is not guaranteed)
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*/
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function pluck(collection, path) {
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return map(collection, property(path));
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}
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module.exports = pluck;
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