Question

给定一个JS字符串：var s = "deep.deeper.deepest"，如何将其转换为如下对象：deep: {deeper: {deepest: {}}}

Answer 1

 const dottedToObj = (str, orig = {}) => (str.split(".").reduce((obj, key) => obj[key] = {}, orig), orig);

将字符串数组（将原始字符串拆分）减少为对象链。或者功能稍差：

 function dottedToObj(str){
  const root = {};
  var acc = root;
  for(const key of str.split(".")){
    acc = acc[key] = {};
  }
  return root;
}

Answer 2

一个简单的循环应该适用于此，只需移动每个虚线属性，同时向下移动对象中的一个级别：

＆＃13;

const s = "deep.deeper.deepest";

function convertToObject(str) {
  const result = {};
  
  let inner = result;
  for (const key of s.split(".")) {
    // Give the object a child with this key
    inner[key] = {};
  
    // Set the current object to that child.
    inner = inner[key]
  }
  
  // Return the original
  return result;
}

console.log(convertToObject(s))

＆＃13;

在对象中转换JavaScript点字符串

2 个答案: