Traverse a JS object to find a key or value

traverse.js

// MODIFIED FROM: http://stackoverflow.com/a/722732/1365289

function process(key, value) {
	if (key === 'myKey') {
		console.error(key, value);
	}
}

function traverse(o, func) {
	for (var i in o) {
		/*jshint validthis: true */
		func.apply(this, [i, o[i]]);
		if (o[i] !== null && typeof(o[i]) == "object") {
			//going on step down in the object tree!!
			traverse(o[i], func);
		}
	}
}

traverse(myObj, process);