How to Recursively Iterate Through Nested JavaScript Objects?

Iterating through Nested JavaScript Objects [Duplicate]

Problem:
How to recursively iterate through a deeply nested JavaScript object to retrieve a specific object based on a given identifier (e.g., "label" property)?

Solution:

Original Answer with Recursion

To deeply iterate through a nested object using recursion:

<code class="js">const iterate = (obj) => {
  Object.keys(obj).forEach((key) => {
    console.log(`key: ${key}, value: ${obj[key]}`);

    if (typeof obj[key] === 'object' && obj[key] !== null) {
      iterate(obj[key]);
    }
  });
};

console.log(iterate({ ...cars }));</code>

2023 Update: Non-Recursive Approach

For a non-recursive approach:

<code class="js">const iterate = (obj) => {
  const stack = [obj];
  while (stack?.length > 0) {
    const currentObj = stack.pop();
    Object.keys(currentObj).forEach((key) => {
      console.log(`key: ${key}, value: ${currentObj[key]}`);
      if (typeof currentObj[key] === 'object' && currentObj[key] !== null) {
        stack.push(currentObj[key]);
      }
    });
  }
};

console.log(iterate({ ...cars }));</code>

In both approaches, the key and value of each nested object are logged to the console.

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