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                ## mapValues + [link](./mapValues "Link to this entry.") + [source](https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L11442 "View in source.") + [npm](https://www.npmjs.com/package/lodash.mapvalues "See the npm package.") ``` _.mapValues(object, [iteratee=_.identity]) ``` 創建一個對象,對象的key相同,值是通過 `iteratee` 產生的。 iteratee 會傳入3個參數: (value, key, object) ### 參數 1. object (Object) 要遍歷的對象 2. [iteratee=_.identity] (Function|Object|string) 這個函數會處理每一個元素 ### 返回值 (Object) 返回映射后的對象 ### 示例 ``` var users = { 'fred': { 'user': 'fred', 'age': 40 }, 'pebbles': { 'user': 'pebbles', 'age': 1 } }; _.mapValues(users, function(o) { return o.age; }); // => { 'fred': 40, 'pebbles': 1 } (無法保證遍歷的順序) // 使用了 `_.property` 的回調結果 _.mapValues(users, 'age'); // => { 'fred': 40, 'pebbles': 1 } (無法保證遍歷的順序) ```
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