How can I Access Deeply Nested Object Values Using a String Path?

Acquiring Deeply Nested Object Values via String Path

Accessing deeply nested object properties can be cumbersome, especially when using string paths to traverse the object. This question seeks a solution to retrieve values from objects based on a provided string path.

Proposed Solution

The suggested approach employs the following function, deep_value, which iteratively navigates the object properties specified in the path string:

<code class="javascript">var deep_value = function(obj, path) {
  for (var i = 0, path = path.split('.'), len = path.length; i < len; i++) {
    obj = obj[path[i]];
  }
  return obj;
};</code>

Breakdown

• The split('.') operation converts the string path into an array of property names.
• A loop is used to traverse the object, accessing each property in sequence.
• The last iteration returns the final nested value.

Example

Consider the following object:

var obj = {
  foo: { bar: 'baz' }
};

To access the value of obj.foo.bar using the string path "foo.bar", the deep_value function can be invoked as follows:

deep_value(obj, "foo.bar"); // returns "baz"

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