我有一个名为 "目录 "的对象数组,其中包括一个人和他们的工作列表。问题是,一个人可以涵盖多个角色,我想在渲染过程中,将 "工作 "归为同一个 "id"。
"directory":
[
{
"id": 37,
"job": "Electrician",
"name": "Alan"
},
{
"id": 32,
"job": "Writer",
"name": "Mark"
},
{
"id": 37,
"job": "DIY",
"name": "Alan"
},
{
"id": 134,
"job": "Director",
"name": "Philip"
},
{
"id": 37,
"job": "Plumber",
"name": "Alan"
},
{
"id": 85,
"job": "Teacher",
"name": "Oliver"
},
]
我想得到一个新的数组来显示。
Alan: Electrician, Plumber, DIY
Mark: Writer
Philip: Director,
Oliver: Teacher
我不知道我应该使用嵌套的.map还是reduce.
感谢任何帮助。
你可以使用 reduce()
用JS来解决你的问题
let directory = [
{
"id": 37,
"job": "Electrician",
"name": "Alan"
},
{
"id": 32,
"job": "Writer",
"name": "Mark"
},
{
"id": 37,
"job": "DIY",
"name": "Alan"
},
{
"id": 134,
"job": "Director",
"name": "Philip"
},
{
"id": 37,
"job": "Plumber",
"name": "Alan"
},
{
"id": 85,
"job": "Teacher",
"name": "Oliver"
},
]
let newDirectory = Object.values(directory.reduce((acc, item) => {
if (!acc[item.name]) acc[item.name] = {
name: item.name,
job: []
};
acc[item.name].job.push(item.job);
return acc;
}, {}))
console.log(newDirectory)
那么你可以根据你的要求在React-Native中使用SectionList来显示数据,或者你也可以尝试像下面这样。
import React, { Component } from 'react';
import { Text, View } from 'react-native';
const newDirectory = [
{ name: 'Alan', job: ['Electrician', 'DIY', 'Plumber'] },
{ name: 'Mark', job: ['Writer'] },
{ name: 'Philip', job: ['Director'] },
{ name: 'Oliver', job: ['Teacher'] }
]
export default class App extends Component {
render() {
return (
<View style={{ flex: 1, marginTop: 50 }}>
{
newDirectory.map(item => (
<Text>{item.name}: {
item.job.map(job => (
<Text>{`${job}, `}</Text>
))
}</Text>
))
}
</View>
);
}
}
希望对你有所帮助。有疑惑的地方可以随时咨询。