如何在JavaScript中将嵌套数组对转换为数组中的对象？
假设我们有一个像这样的数组的数组-
const arr = [
[
['firstName', 'Joe'],
['lastName', 'Blow'],
['age', 42],
['role', 'clerk'],
[
['firstName', 'Mary'],
['lastName', 'Jenkins'],
['age', 36],
['role', 'manager']
]
]
];我们需要编写一个包含一个这样的数组的JavaScript函数。该函数应基于此数组数组构造一个对象数组。
输出数组应包含每个唯一用户的对象以及有关它的其他详细信息。
因此，数组的输出应类似于-
const output = [
{firstName: 'Joe', lastName: 'Blow', age: 42, role: 'clerk'},
{firstName: 'Mary', lastName: 'Jenkins', age: 36, role: 'manager'}
];示例
为此的代码将是-
const arr = [
[
['firstName', 'Joe'],
['lastName', 'Blow'],
['age', 42],
['role', 'clerk'],
[
['firstName', 'Mary'],
['lastName', 'Jenkins'],
['age', 36],
['role', 'manager']
]
]
];
const convertToObject = (arr = []) => {
const empty = {};
const res = arr.map(el => {
const object = this;
el.forEach(attr => {
let name = attr[0], value = attr[1];
object[name] = value;
return object;
}, object);
return this;
}, empty);
return res;
}
console.log(convertToObject(arr));输出结果
控制台中的输出将是-
[
{
firstName: 'Joe',
lastName: 'Blow',
age: 42,
role: 'clerk',
'firstName,Mary': [ 'lastName', 'Jenkins' ]
}
]