Find Path of Key in Deeply Nested Object or Array

Daniel Trindade answered on August 31, 2022 Popularity 1/10 Helpfulness 1/10

answer Find Path of Key in Deeply Nested Object or Array

Find Path of Key in Deeply Nested Object or Array

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const findPath = (ob, key) => {
  const path = [];
  const keyExists = (obj) => {
    if (!obj || (typeof obj !== "object" && !Array.isArray(obj))) {
      return false;
    }
    else if (obj.hasOwnProperty(key)) {
      return true;
    }
    else if (Array.isArray(obj)) {
      let parentKey = path.length ? path.pop() : "";

      for (let i = 0; i < obj.length; i++) {
        path.push(`${parentKey}[${i}]`);
        const result = keyExists(obj[i], key);
        if (result) {
          return result;
        }
        path.pop();
      }
    }
    else {
      for (const k in obj) {
        path.push(k);
        const result = keyExists(obj[k], key);
        if (result) {
          return result;
        }
        path.pop();
      }
    }
    return false;
  };

  keyExists(ob);

  return path.join(".");
}

Popularity 1/10 Helpfulness 1/10 Language javascript

Source: www.techighness.com

Tags: find javascript key nested-object path

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Contributed on Aug 31 2022

Daniel Trindade

0 Answers Avg Quality 2/10

Find Path of Key in Deeply Nested Object or Array

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