Monthly Archives: June 2020

By default, all the properties of JavaScript objects are enumerable. That means you can enumerate them in a for loop or read them using the Object.values(). Let us consider an object Dog as shown below, let Dog = { name :’foo’, age: 9, canRun : true, eatMilk : false } You can enumerate all propertiesContinueContinue reading “How to make a property non-enumerable in JavaScript?”

Have you come across a requirement to merge two or more arrays  into another array? Let us say, you have two arrays as shown below, const metrocities = [‘Delhi’, ‘Mumbai’,’Chennai’,’Bangalore’,’Hyderabad’]; const smallcities = [‘Jamshedpur’,’Pune’,’Lucknow’,’Trivandrum’]; You need to merge them in another array with optional extra elements in the resultant array. JavaScript array spread operator makesContinueContinue reading “How to merge arrays using spread operator in JavaScript?”

We don’t have Access Modifiers in JavaScript, and all properties of an object are public, which means you can read and modify them outside the object. But what if you have a requirement to create private properties?  Consider Product object as mentioned below, let Product = { id: ‘1’, price: 200, title: ‘Pencil’ } console.log(Product.id);ContinueContinue reading “How to create Private Properties in JavaScript.”