lodash: check object is empty

Question

I have this object: {"": undefined}

and when I check this object for empty in this way: _.isEmpty({"": undefined})

I get false result, maybe in lodash we have another method?

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>

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

Answer 2

Your example object is not empty so instead perhaps you want to test if all properties are undefined

let o = {foo: undefined}; !_.values(o).some(x => x !== undefined); // true