从数组项创建 object

Question

我正在尝试创建以下内容，但找不到任何成功，如果有办法，请告诉我：) 我有 2 个变量，称为 text1 和 text2，它们中的每一个都应代表 object 中的一个键和值关键将是数据变量。

In the beginning, the object will start as empty, and I need to create a function that will create that object inside the object as many times as need, it can be a case where the text will have more than 3 keys, for eg items .courses.lessons.assets.title 等。所以 function 必须是动态的。 请注意，function 必须检查该键是否已经存在，因此如果有另一个具有相同起始键的文本，它不会覆盖它（参见下面的示例）

const data1 = 'hello';
const text1 = 'lessons.first.title';

const data2 = 'hello there';
const text2 = 'lessons.first.description';

// how the end result should look like
const result = {
    lessons: {
        first: {
            title: 'hello',
            description: 'hello there',
        },
    },
};

谢谢！

Answer 1

将路径分开，删除最后一部分。 使用剩余路径循环 object。 到最后，将属性设置为值。

 function setProp(obj, path, value) { var parts = path.split("."); var last = parts.pop(); var current = parts.reduce(function (acc, part) { acc[part] = acc[part] || {}; return acc[part]; }, obj); current[last] = value; } const data1 = 'hello'; const text1 = 'lessons.first.title'; const data2 = 'hello there'; const text2 = 'lessons.first.description'; var myObj = {}; setProp(myObj, text1, data1 ); setProp(myObj, text2, data2); console.log(myObj);

Answer 2

我是这样做的：）

const data1 = 'hello';
const text1 = 'lessons.first.title';

const data2 = 'hello there';
const text2 = 'lessons.first.description';

const res = {};
const addProp = (keys, value) => {
    let temp = res;
  const len = keys.split('.').length
    keys.split('.').forEach((key,index)=>{
    if(!temp[key]) {
        temp[key] = {};
    }
    if(index === len - 1){
        temp[key] = value;
    }
    temp = temp[key];
  });
}

addProp(text1, data1);
addProp(text2, data2);
console.log(res);

Answer 3

这是我的尝试

function constructObj(obj, path, value) {
  const pathArray = path.split('.');

  let currentNode = obj;
  for (let i = 0; i < pathArray.length; i++) {
    const path = pathArray[i];

    if (i === pathArray.length - 1) { // if on last element assign the value
      currentNode[path] = value;
    }

    if (currentNode[path] === undefined) { // check if key exists
      const newObj = {};
      currentNode[path] = newObj; 
      currentNode = newObj;
    } else {
      currentNode = currentNode[path];
    }
  }
}


const result = {};
const data1 = 'hello';
const text1 = 'lessons.first.title';

constructObj(result, text1, data1);

const data2 = 'hello there';
const text2 = 'lessons.first.description';
constructObj(result, text2, data2);