Javascript：通过将对象的路径作为字符串传递给对象，从而获得深层价值

考虑一下：

var obj = {  foo: { bar: 'baz' }};function deepFind(obj, path) {  var paths = path.split('.')    , current = obj    , i;  for (i = 0; i < paths.length; ++i) {    if (current[paths[i]] == undefined) {      return undefined;    } else {      current = current[paths[i]];    }  }  return current;}console.log(deepFind(obj, 'foo.bar'))