[英]How to preserve object keys in lodash filter
我有一个数组
const sampleObject = {Color: "Blue", Size: "39, 41"}
当我尝试时使用 Lodash 的 _.filter
_.filter(sampleObject, (entry) => entry !== 'Blue')
我得到
['39, 41']
但我想要的结果是
{Size: '39, 41'}
const sampleObject = { Color: "Blue", Size: "39, 41" } const filtered = _.filter(sampleObject, (entry) => entry !== 'Blue') console.log(filtered);
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/16.6.3/umd/react.production.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/16.6.3/umd/react-dom.production.min.js"></script> <script src="https://cdn.jsdelivr.net/npm/lodash@4.17.10/lodash.min.js"></script>
你在找_.pickBy()
吗?
const sampleObject = { Color: "Blue", Size: "39, 41" } const filtered = _.pickBy(sampleObject, (value,key) => value !== 'Blue') console.log(filtered);
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/16.6.3/umd/react.production.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/16.6.3/umd/react-dom.production.min.js"></script> <script src="https://cdn.jsdelivr.net/npm/lodash@4.17.10/lodash.min.js"></script>
您需要执行此操作似乎很奇怪,但是您可以使用 fromEntries 和条目来执行此操作
const sampleObject = {Color: "Blue", Size: "39, 41"} const result = Object.fromEntries(Object.entries(sampleObject).filter(x => x[1] !== 'Blue')); console.log(result);
如果您只想要新对象中的一个属性,请直接获取它:
const sampleObject = {Color: "Blue", Size: "39, 41"}; const result = {Size: sampleObject.Size}; console.log(result);
或者,如果您需要动态密钥:
const sampleObject = {Color: "Blue", Size: "39, 41"}; const key = "Size"; const result = {[key]: sampleObject[key]}; console.log(result);
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