我的代碼:Lodash地圖的鍵和值
const orig = {" a ":1, " b ":2}
let result = _.mapKeys(_.mapValues(orig, (v) => v + 1), (v, k) => k.trim())
實際和期望的結果= { 「一」:2, 「B」:3 }
但有一個更好的Lodashy這樣做的方式?
我的代碼:Lodash地圖的鍵和值
const orig = {" a ":1, " b ":2}
let result = _.mapKeys(_.mapValues(orig, (v) => v + 1), (v, k) => k.trim())
實際和期望的結果= { 「一」:2, 「B」:3 }
但有一個更好的Lodashy這樣做的方式?
該解決方案使用_.transform()
,它有點短。我不確定它比你的功能性解決方案更好。
const orig = {" a ": 1, " b ": 2 };
const result = _.transform(orig, (r, v, k) => r[k.trim()] = v + 1);
console.log(result);
<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.4/lodash.min.js"></script>
怎麼這樣呢?
const orig = {" a ":1, " b ":2};
function test(object) {
let out = {};
_.forEach(object, function(value, key) {
out[key.trim()] = value + 1;
});
return out;
}
console.log(test(orig));
<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.4/lodash.min.js"></script>
使用減少,你可以這樣做:
var obj = {" a ":1, " b ":2}
result = _.reduce(obj, (result, v, k) => {
result[k.trim()] = v + 1
return result
}, {})
console.log(result)
<script src="https://cdn.jsdelivr.net/npm/[email protected]/lodash.min.js"></script>
減少是比較熟悉的,但IMO變換似乎在這裏更合適
可能不是不幸ly:https://github.com/lodash/lodash/issues/2718 – user3080953