Get All Paths To A Specific Key In A Deeply Nested Object

How do i recursively search for a specific key in a deeply nested object. For example: let myObject = {a: {k:111, d:3}, b:'2', c: { b: {k: 222}}, d: {q: {w: k: 333}}} } let result

Solution 1:

You could create recursive function to do this using for...in loop.

let myObject = {a: {k:111, d:3},  b:"2", c: { b: {k: 222}}, d: {q: {w: {k: 333}}} }

functiongetAllPaths(obj, key, prev = '') {
  const result = []

  for (let k in obj) {
    let path = prev + (prev ? '.' : '') + k;

    if (k == key) {
      result.push(path)
    } elseif (typeof obj[k] == 'object') {
      result.push(...getAllPaths(obj[k], key, path))
    }
  }

  return result
}

const result = getAllPaths(myObject, 'k');
console.log(result);