Dot walk object until last property reached

dotWalkObject.js

/**
 * Dot walk object until last property reached
 * @param {Object} obj obj
 * @param {Array} props array of object properties
 * @returns the last object value
 */
function recurseObjChildren(obj, props) {
    props = Array.isArray(props) ? props : props.split('.');
    var item = props.shift();
    var arrLen = props.length;
  	var isArr = item.match(/(.+)\[(\d+)\]/);
		
    var obj = isArr && !obj.hasOwnProperty(item) ? obj[isArr[1]][isArr[2]] : obj[item];
    
    return arrLen == 0 ? obj : recurseObjChildren(obj, props);


}