javascript - 转换对象中的 JavaScript 点分字符串

Question

给定一个 JS 字符串:var s = "deep.deeper.deepest" ，我怎样才能将其转换为这样的对象:deep: {deeper: {deepest: {}}}

Answer 1

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

只需将字符串数组(将原始字符串拆分)减少为对象链即可。或者功能少一点:

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