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Articles by Saurabh Anand
17 articles
JavaScript Program for Equilibrium Index of an Array
To write a JavaScript program for equilibrium index of an array, we are going to discuss three different approaches with detailed explanation and example codes. The equilibrium index of an array is the position where the sum of the elements to its left and right equals one another. In this article we are having an array of integers, our task is to to write a JavaScript program for equilibrium index of an array. Example Input: arr = [-7, 1, 5, 2, -4, 3, 0] Output: Equilibrium index: 3 At index 3, left sum = -7 + ...
Read MoreJavaScript Program to Find k Pairs with Smallest Sums in Two Arrays
To find k pairs with smallest sums in two arrays in Javascript, we will be using sorted arrays in ascending order. We are going to discuss two different approaches with stepwise explanation and examples. In this article we are having two arrays and a value of k, our task is to find k pairs with smallest sums in two arrays. Users must be familiar with JavaScript arrays, loops and conditional statement. Example Input: arr1 = [1, 7, 11], arr2 = [2, 4, 6] k = 3 Output: [[1, 2], [1, 4], [1, 6]] Input: arr1 = [1, 4, ...
Read MoreES2022 JavaScript at() Method
JavaScript is a powerful and versatile programming language that is widely used for both front-end and back-end development. One of the features that makes JavaScript so powerful is its extensive standard library, which includes many built-in methods for working with strings, arrays, and other data types. One such method is the at() method, which was introduced in ECMAScript 2022 and is used to retrieve the character at a given index in a string. In this tutorial, we'll take a look at how to use the at() method, as well as explore some of its advantages over the older charAt() method. ...
Read MoreJavaScript Program for Find the smallest missing number
We are given a sorted array of distinct non-negative integers, here we have to find the smallest missing number. Hence in this tutorial, we will explore different methods to solve this problem and discuss their time complexities with various examples. Understanding the Problem The problem statement is quite simple. Given a sorted array of distinct non-negative integers, we need to find the smallest missing number in it. Let's take an example to understand the problem. Example Let’s say that we have an array [1, 2, 4, 5, 6]. Here, We can see that there is a space between the ...
Read MoreHow to create a function `generateSelector` to generate CSS selector path of a DOM element ?
The generateSelector method is a helpful tool for determining the path to a specific portion of a website known as a DOM element. Understanding how CSS selectors work and how to build them can be useful in a variety of situations, such as testing automation or the construction of shortcuts for easy element selection. We will discuss the function's concept and offered a clear example of how to use it in this article. Imagine you want to make a change to one specific element on a website. But how do you know what selector to use? That's where our ...
Read MoreHow to create a button that submits a form and downloads a pdf simultaneously?
By using HTML, JavaScript and jsPDF, we can create a button that can submit the form and download a pdf simultaneously. We will use HTML to create a form, JavaScript to handle the submission process and jsPDF to generate the PDF document. The act of submitting a form and getting a PDF is among the most frequent use cases. On the internet, PDFs are a common format for documents. They may be used to keep track of contracts, invoices, and other crucial data. In many instances, submitting a form is required before receiving a PDF. Let’s discuss the complete procedure ...
Read MoreHow to Create a Bootstrap Spinner and Display on Screen till the data from the API loads ?
Using Bootstrap, we will create a Bootstrap spinner and display it on the screen until data from an API is loaded. This will give customers visual indications that something is going on in the background and can be an excellent method to improve the user experience. In this blog, we will be utilizing Bootstrap, a famous front-end programming framework. Follow the below steps to create a Bootstrap spinner and display on screen till the data from the API loads - Step 1: Include the Bootstrap CSS and JavaScript Files We will begin with our first step by importing JavaScript ...
Read MoreHow to Create a Binary Calculator using HTML, CSS and JavaScript?
A binary calculator is a program that performs mathematical calculation on binary numbers. Now, as of you remember the binary numbers are those numbers which are formed from only two numbers i.e., 0 and 1. In this blog, we will use this program to calculate addition, subtraction, multiplication and division on binary numbers. This will be a basic calculator that will use basic concepts of HTML, CSS and JavaScript to do the same. So, let’s get started with the HTML structure. HTML Structure Firstly, we will make a form which will be divided into table rows giving features like ...
Read MoreHow to create 3D Geometries in webGL and p5.js?
Creating 3D geometries in webGL and p5.js is a powerful way to create interactive and visually interesting web applications. With the ability to create basic shapes, add textures, lighting, and materials, and transform 3D geometries, we can create a wide range of 3D graphics and animations. By understanding the basics of webGL and p5.js, we can create stunning 3D geometries for their web applications. 3D Shapes creation The first step is to generate some 3D geometries using webGL and p5.js built-in functions. These shapes can be produced using the library's built-in methods, such as sphere(), box(), and cylinder(). ...
Read MoreHow to count the number of times a button is clicked using JavaScript?
Tracking button clicks is a common task in JavaScript and can be achieved by using the addEventListener() method. By adding an event handler method to the button element and incrementing a variable each time the button is pressed, we can simply keep track of button clicks. We can quickly show the user how many clicks there have been by showing that information on a web page and keeping the clicks in localStorage. We can even save the clicks even after the user shuts the browser. Suppose we are building a simple calculator then we will need buttons that can ...
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