Get a lowercase representation of a JSON object, recursively (JS)

gistfile1.js

	function toLowerCase(obj) {
		if (!obj) {
			return;
		}
		if (typeof obj !== 'Object' && typeof obj !== 'object') {
			return;
		}
		var keys = Object.keys(obj);
		var result = {};
		keys.map(function(k, v) {
			if (typeof k === 'string') {
				if (typeof obj[k] === 'string') {
					result[k.toLowerCase()] = obj[k].toLowerCase();
				} else {
					// if the node is an object, perform the same process over that node
					if (typeof obj[k] === 'Object' || typeof obj[k] === 'object') {
						result[k.toLowerCase()] = toLowerCase(obj[k]);
					} else {
						result[k.toLowerCase()] = obj[k];
					}
				}
			}
		});
		return result;
	}

Great work!
I'd suggest to remove the toLowerCase() function for object values result[k.toLowerCase()] = obj[k]; to keep the original ones, only modifying the structure. Or even better, add an optional boolean flag function toLowerCase(obj, force) to preserve or replace object values.

Thanks. This actually saves my time.

Thanks friend..