How to traverse an object in depth leaving only the required fields as a result?

• 0
  How to traverse an object in depth leaving only the required fields as a result? I don’t understand how I can go through the recursion writing the values, so that as a result of the function's work, the object will be returned from only the necessary values.
  
  

  function filter (obj) {
    let keys = Object.keys(obj);
    let key = keys.shift();
  
    if (keys.length === 0) return obj;
  
    if (!key.match(/_/gi)) {
      return filter(obj[key]);
    }
  
  }
  
  const obj = {
    promo: {
      koto: {
        moto: 'sef',
        _mlol: {
          set: 'asd'
        }
      }
    },
    _moto: 'sef',
    mlol: {
      set: { _dodo: 'ts'}
    }
  }

  JavaScript Anonymous, Oct 18, 2019

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0 Answers