请教下大神，不同长度数组合并问题？

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请教下大神，不同长度数组合并问题？Ask God, the problem of merging arrays of different lengths?

arr1 = [{uid:"111111",name:"test1"},{uid:"222222",name:"test2"},{uid:"333333",name:"test3"},{uid:"444444",name:"test4"},{uid:"555555",name:"test5"},]arr2 = [{uid:"111111", score:100},{uid:"222222", score:80},{uid:"333333", score:85},{uid:"444444", score:95},]

arr3 = [{name:"test1",score:100},{name:"test2",score:80},{name:"test3",score:85},{name:"test4",score:95},{name:"test5",score:0},]

arr1 = [{uid:"111111",name:"test1"},{uid:"222222",name:"test2"},{uid:"333333",name:"test3"},{uid:"444444",name:"test4"},{uid:"555555",name:"test5"},]arr2 = [{uid:"111111", score:100},{uid:"222222", score:80},{uid:"333333", score:85},{uid:"444444", score:95},] 想要合并成一个新的数组，uid没有分数据用0填充，如何在小程序的 js里面实现？ 实现结果： arr3 = [{name:"test1",score:100},{name:"test2",score:80},{name:"test3",score:85},{name:"test4",score:95},{name:"test5",score:0},]

鍥炵瓟锛�

_arr2 = arr2.reduce((t, {uid,score}) => (t[uid] = score, t), {});arr3 = arr1.map(({uid,name}) => ({name,score: _arr2[uid] || 0}));console.info(arr3);

let obj3 = {}arr1.forEach(v=>obj[v.uid].name=v.name)arr2.forEach(v=>obj[v.uid].score=v.score)let arr3=[]for(let k in obj3) {arr3.push({  uid:k,  name:obj3[k].name,  score:obj3[k].score  })}