JavaScript - 将数组转换为键值对
javascriptweb developmentfront end technologyobject oriented programming
假设我们有一个像这样的数组 −
const arr = [
{"name": "Rahul", "score": 89},
{"name": "Vivek", "score": 88},
{"name": "Rakesh", "score": 75},
{"name": "Sourav", "score": 82},
{"name": "Gautam", "score": 91},
{"name": "Sunil", "score": 79},
];
我们需要编写一个 JavaScript 函数，该函数接受一个这样的数组并构造一个对象，其中 name 值是键，score 值是其值。
使用 Array.prototype.reduce() 方法从数组构造一个对象。
示例
以下是代码 −
const arr = [
{"name": "Rahul", "score": 89},
{"name": "Vivek", "score": 88},
{"name": "Rakesh", "score": 75},
{"name": "Sourav", "score": 82},
{"name": "Gautam", "score": 91},
{"name": "Sunil", "score": 79},
];
const buildObject = arr => {
const obj = {};
for(let i = 0; i < arr.length; i++){
const { name, score } = arr[i];
obj[name] = score;
};
return obj;
};
console.log(buildObject(arr));
输出
这将在控制台中产生以下输出 −
{ Rahul: 89, Vivek: 88, Rakesh: 75, Sourav: 82, Gautam: 91, Sunil: 79 }
