我在 ReactJs 中编写代码我有一个像这样的对象数组
[
{
createdBy: "DEF",
createdDate: "2020",
lastModifiedDate: "2021",
name: "John Doe",
section: {
createdBy: "A2C",
status: "ACTIVE",
},
sectionName: "Mechanical",
},
{
createdBy: "ABC",
createdDate: "2020",
lastModifiedDate: "2021",
name: "John Doe",
section: {
createdBy: "ABC",
status: "ACTIVE",
},
sectionName: "Mechanical",
},
{
createdBy: "ABC",
createdDate: "2020",
lastModifiedDate: "2021",
name: "John Doe",
section: {
createdBy: "XYZ",
status: "ACTIVE",
},
sectionName: "Mechanical",
},
{
createdBy: "A1C",
createdDate: "2020",
lastModifiedDate: "2021",
name: "John Wick",
section: {
createdBy: "ABC",
status: "ACTIVE",
},
sectionName: "Mechanical",
},
];
在这里，唯一相同的是“名称”，因此基于名称，我希望将重复的对象存储在新数组中。
我试过这样
let temp = [];
for (const i of response) {
if (!temp.includes(i)) {
temp.push(i);
console.log("if loop", i);
} else {
console.log("else loop", response);
}
}
但控制永远不会转到其他，因为它认为每个对象都是不同的。
我需要一个对象的第一次出现，但是当“名称”元素被重复时，该对象应该存储在一个新数组中。
预期的：-
[
{
createdBy: "ABC",
createdDate: "2020",
lastModifiedDate: "2021",
name: "John Doe",
section: {
createdBy: "ABC",
status: "ACTIVE",
},
sectionName: "Mechanical",
},
{
createdBy: "ABC",
createdDate: "2020",
lastModifiedDate: "2021",
name: "John Doe",
section: {
createdBy: "XYZ",
status: "ACTIVE",
},
sectionName: "Mechanical",
},
]
你可以维护一个tracker对象来检查同名的对象是否已经被访问过。如果访问，则将对象duplicate推入unique数组，否则推入数组。尝试这个-
const data=[{createdBy:"ABC",createdDate:"2020",lastModifiedDate:"2021",name:"John Doe",section:{createdBy:"ABC",status:"ACTIVE"},sectionName:"Mechanical"},{createdBy:"ABC",createdDate:"2020",lastModifiedDate:"2021",name:"John Doe",section:{createdBy:"A2C",status:"ACTIVE"},sectionName:"Mechanical"},{createdBy:"A1C",createdDate:"2020",lastModifiedDate:"2021",name:"John Doe",section:{createdBy:"ABC",status:"ACTIVE"},sectionName:"Mechanical"}];
const track = {};
const unique = [];
const duplicate = [];
for (const item of data) {
if (track?.[item.name] === undefined) {
unique.push(item);
track[item.name] = true;
} else {
duplicate.push(item);
}
}
console.log('unique', unique);
console.log('duplicate', duplicate);.as-console-wrapper {min-height: 100%!important; top: 0}本文收集自互联网，转载请注明来源。
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