How do I loop through or enumerate a JavaScript object?

tl;dr

You can loop through a JavaScript object using a for...in loop. This loop will iterate over all the enumerable properties of an object. For example:

const myObject = {
    name: 'John',
    age: 25,
    city: 'New York'
};

for (const key in myObject) {
    console.log(`${key}: ${myObject[key]}`);
}

The above code will output the following:

name: John
age: 25
city: New York