Aarthi Elumalai

In this tutorial, let us look at how to swap array elements in JavaScript. We’ll start off by taking things easy, while moving on to using more pre-defined JavaScript methods as we dive deep into the topic. We’ll look at: 1. Using temporary variables to swap the array elements 2. Using the splice method 3. … Read more

In this article, let’s look at the different ways to find duplicates in an array in JavaScript. We’re going to be looking at different pre-defined JavaScript methods and finally some manual methods of finding the duplicates (usually using loops). We’ll be looking at: 1. Finding if an array contains duplicates. 2. Getting an array of … Read more

In this tutorial, let’s look at the different ways to concat two objects in JavaScript. We’re going to look at using both pre-defined and manual methods to merge our objects. Use the spread operator to merge objects Let’s say we have two objects, obj1 and obj2. With a string, you would have used concatenation to … Read more

In this tutorial, let’s look at how to remove quotes from a string in JavaScript. We’ll be looking at using methods that involve predefined string methods like replace, replaceAll, slice, substring, split and join to start with. Then finally, we’ll end the tutorial by looking at manually removing the quotes with loops. Using the replace … Read more

In this tutorial, let’s look at the different ways to return multiple values from a function in JavaScript. – Let’s first try to return multiple values with the traditional method (the return statement), and then move on to more complex methods that involve arrays, objects and destructuring. Trying the traditional way – using a return … Read more

In this tutorial, let’s look at how to truncate a string in JavaScript. We’re going to be looking at using the ‘slice’, ‘splice’, ‘split’ and other pre-defined functions in JavaScript, as well as manual methods using the ‘for’ loop. Let’s get to it then! Check if the string is already within the limit Before we … Read more

In this tutorial, let’s look at the different ways to check if a value exists in an object using JavaScript. We’re going to be looking at a combination of straight-forward (directly searching through the list of values) and roundabout methods (searching via the list of properties). Using Object.values One of the easiest ways to check … Read more

In this tutorial, let’s look at how to replace an item in an array in JavaScript. We’ll be looking at multiple methods, from 1. simple methods that directly use the index to, 2. pre-defined JavaScript methods like splice, fill and slice and finish things off with 3. roundabout methods that involve loops and string conversions. … Read more

In this tutorial, let’s look at the different ways to check if a JavaScript value is an array. We’re not just stopping at the usual ‘typeof’ operator. We’re going to go deeper than that. Using the typeof operator In JavaScript, if you’d like to find the type of any value, the typeof operator is the … Read more

In this tutorial, we’re going to be looking at the different ways to add leading zeros to a number in JavaScript. Sometimes, your program might require your numbers to have a set number of digits. Other times, you might be required to add a set number of leading zeros to fulfil a purpose. In those … Read more