Get nested value from the given object. It checks for the key first then returns the value.

getNestedValue.js

/**
 * Get nested value from the given object. It checks for the key first then returns the value.
 * 
 * @param {object} d
 * @param {string} k - key name separated by dot character
 * @example 
 * const data = {
    pid: 'some-id',
    portions: { name: 'section' }
}
 * console.log(getNestedValue(data, "portions.name")); // 'section'
 * 
 * @returns value, If nothing found null will be returned.
 */
function getNestedValue(d = {}, k = "") {
    const keys = String(k).split(".");
    if (!keys.length) return null;
    return keys.reduce((p, c) => Object(p).hasOwnProperty(c) ? p[c] : null, d);
}