javascript - lodash:检查对象是否为空

Question

我有这个对象:{"": 未定义}

当我以这种方式检查该对象是否为空时:_.isEmpty({"": undefined})

我得到false结果，也许在lodash中我们还有另一种方法？

Answer 1

_.isEmpty(obj, true)

var obj = {
  'firstName': undefined
, 'lastName' : undefined
};

console.log(_.isEmpty(obj)); // false
console.log(_.isEmpty({})); // true

<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.4/lodash.js"></script>

请参阅http://www.ericfeminella.com/blog/2012/08/18/determining-if-an-object-is-empty-with-underscore-lo-dash/