javascript - 用js 写一方法，将a的数据处理为a1?
id相同，ass里的数据根据 id相同，unicode 相同 ，把pearPlanFlag有属性的值加到第一个id出现的情况
const a = [ { id: 3889, ass: [ { unicode: 111, uniname: "上海", budgetMoney: 200 , pearPlanFlag: true}, { unicode: 222, uniname: "山西", budgetMoney: 600 , pearPlanFlag: false}, { unicode: 333, uniname: "江西", budgetMoney: 200 , }, ], }, { id: 3889, ass: [ { unicode: 111, uniname: "上海", budgetMoney: 200 }, { unicode: 222, uniname: "山西", budgetMoney: 600 }, { unicode: 333, uniname: "江西", budgetMoney: 200 , pearPlanFlag: true}, ], }, { id: 4000, ass: [ { unicode: 111, uniname: "上海", budgetMoney: 200 , pearPlanFlag: true}, { unicode: 222, uniname: "山西", budgetMoney: 600 }, { unicode: 333, uniname: "江西", budgetMoney: 200 }, ], }, { id: 4000, ass: [ { unicode: 111, uniname: "上海", budgetMoney: 200 }, { unicode: 222, uniname: "山西", budgetMoney: 600 , pearPlanFlag: false}, { unicode: 333, uniname: "江西", budgetMoney: 200 }, ], }, { id: 4000, ass: [ { unicode: 111, uniname: "上海", budgetMoney: 200 }, { unicode: 222, uniname: "山西", budgetMoney: 600 }, { unicode: 333, uniname: "江西", budgetMoney: 200 , pearPlanFlag: true}, ], }];const a1 = [ { id: 3889, ass: [ { unicode: 111, uniname: "上海", budgetMoney: 200 , pearPlanFlag: true}, { unicode: 222, uniname: "山西", budgetMoney: 600 , pearPlanFlag: false}, { unicode: 333, uniname: "江西", budgetMoney: 200 , pearPlanFlag: true }, ], }, { id: 3889, ass: [ { unicode: 111, uniname: "上海", budgetMoney: 200 }, { unicode: 222, uniname: "山西", budgetMoney: 600 }, { unicode: 333, uniname: "江西", budgetMoney: 200 }, ], }, { id: 4000, ass: [ { unicode: 111, uniname: "上海", budgetMoney: 200 , pearPlanFlag: true}, { unicode: 222, uniname: "山西", budgetMoney: 600 , pearPlanFlag: false}, { unicode: 333, uniname: "江西", budgetMoney: 200 , pearPlanFlag: true}, ], }, { id: 4000, ass: [ { unicode: 111, uniname: "上海", budgetMoney: 200 }, { unicode: 222, uniname: "山西", budgetMoney: 600 }, { unicode: 333, uniname: "江西", budgetMoney: 200 }, ], }, { id: 4000, ass: [ { unicode: 111, uniname: "上海", budgetMoney: 200 }, { unicode: 222, uniname: "山西", budgetMoney: 600 }, { unicode: 333, uniname: "江西", budgetMoney: 200 }, ], }];共有3个答案
Object.values(a.reduce((obj, {id, ass}) => { let arr = obj[id] ??= {'': []}; arr[''].push({id, ass: ass.map(({pearPlanFlag: v, ...rest}) => { (arr[rest.unicode] ??= rest).pearPlanFlag ??= v; return rest; })}); return obj;}, {})).flatMap(i => i['']);
function transform(arr) { const ret = [], cache = {}; for (let i = 0; i < arr.length; ++i) { const { id, ass } = arr[i]; const _ass = (cache[id] ??= {}); ret[i] = { ...arr[i], ass: [] }; for (let j = 0; j < ass.length; ++j) { const item = ret[i].ass[j] = { ...ass[j] }; const { unicode, pearPlanFlag } = item; const _item = _ass[unicode]; if (!_item) { _ass[unicode] = item; } else if (pearPlanFlag != null) { if (_item.pearPlanFlag == null) { _item.pearPlanFlag = pearPlanFlag; } delete item.pearPlanFlag; } } } return ret;}console.log(transform(a));
function processArray(a) { return a.map(item => { const hasTrueFlag = item.ass.some(assItem => assItem.pearPlanFlag === true); item.ass = item.ass.map(assItem => { assItem.pearPlanFlag = hasTrueFlag; return assItem; }); return item; });}const a1 = processArray(a);-
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js数据处理 const translations = { 'editor.remove': 'Remove', 'editor.copy': 'Copy', 'editor.words': 'WORDS', 'editor.characters': 'CHARACTERS', 'editor.default': 'Default', 'editor.recent': 'Recently Used
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