What is the difference between using for...in loop and Object.keys() to enumerate properties of an object in JavaScript?
for...in loop is used to iterate over both enumerable properties and prototype properties, while Object.keys() only returns the enumerable properties
for...in loop returns the property names as strings, while Object.keys() returns an array of property names
for...in loop does not work with objects that have Symbol properties, while Object.keys() can handle Symbol properties
for...in loop can be used with arrays, while Object.keys() only works with objects
The for...in loop and Object.keys() are both used to enumerate the properties of an object, but there are some differences. The for...in loop iterates over both enumerable properties and prototype properties of an object, while Object.keys() only returns the enumerable properties as an array of strings. Additionally, the for...in loop does not work with objects that have Symbol properties, while Object.keys() can handle Symbol properties.