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In this problem statement, our target is to count the repeating letter in the given string with the help of Javascript functionalities. So we can solve this problem with the help of loops and some built-in methods of Javascript. Logic for the given problem In the given problem statement we have to design a program to count the repeating letters in the given string. For implementing this task first we will create a blank object for count, array for repeated characters and another object for results. Then we will loop through every character in the string. So ... Read More
We need to write a JavaScript function that counts how many elements can be removed from an array such that after removal, the sum of elements at odd indices equals the sum of elements at even indices. The approach involves calculating cumulative sums for odd and even positioned elements, then checking each removal scenario mathematically without actually removing elements. Problem Understanding Given an array, we want to find how many single element removals result in equal odd and even index sums in the remaining array. For example, with array [2, 6, 4, 2]: Remove index ... Read More
In this article, we create a function that can take a string in any format. Such as normal case, snake case, pascal case or any other into camelCase in JavaScript. camelCase is a writing style where each word within a phrase is capitalized, except for the first word, and there are no spaces or punctuation. Let us understand through some sample example of I/O Scenario − Sample Input - const str = 'New STRING'; Sample Output - const output = 'newString'; Converting any case to camelCase in JavaScript Converting any ... Read More
In this tutorial, we are going to learn how we can maintain the stroke width of Ellipse while scaling using FabricJS. By default, the stroke width increases or decreases with respect to the object's scale values. However, we can disable this behaviour by using the strokeUniform property. Syntax new fabric.Ellipse({ strokeUniform: Boolean }: Object) Parameters options (optional) − This parameter is an Object which provides additional customizations to our ellipse. Using this parameter color, cursor, stroke width and a lot of other properties ... Read More
In this tutorial, we will create a notes-taking app using HTML, Bootstrap, and JavaScript. HTML provides the structure, Bootstrap handles the styling and responsive design, and JavaScript adds functionality for adding, displaying, and deleting notes with persistent storage. Our application will feature a text area for entering notes, an "Add" button to save notes, and a dynamic list displaying all notes with delete functionality. We'll implement local storage to maintain notes even after page refreshes. Local Storage Overview Local Storage is browser storage that persists data on the user's computer. Unlike session storage, data remains available across ... Read More
In JavaScript, there are multiple ways to find elements that match specific conditions. While the underscore.js library provides the _.where() function, modern JavaScript also offers native methods like filter(), every(), and find(). Using _.where() from Underscore.js The _.where() function belongs to underscore.js, a JavaScript library that provides utility functions. It finds elements that match specified properties in an array of objects. Syntax _.where(list, properties) Parameters: list − The array to search through properties − Object containing the matching criteria Return value: An array containing ... Read More
To accept all pending connection requests on LinkedIn using JavaScript, you would need to use the LinkedIn API and an automation tool. The script would need to navigate to the connection request page and loop through each request, clicking the accept button for each one. This is a very common issue for people who are moderately to highly active on LinkedIn. They get many connection requests every day and must manually click on accept against each request to actually accept them. You can, however make use of JavaScript and the window console to automate this whole process and ... Read More
In JavaScript, creating arrays filled with random values is a common requirement for simulations, games, and testing. The Math.random() method generates random numbers between 0 (inclusive) and 1 (exclusive), which can be combined with various array methods to create arrays of random values. Using Math.random() with For Loop The most straightforward approach uses a for loop with Math.random() to populate an array: Syntax // Random decimals between 0 and 1 for (let i = 0; i < arrayLength; i++) { randomArr.push(Math.random()); } // Random integers in a range for (let ... Read More
Given there is a number with digits after decimal point and the task is to find the count of digits after the decimal point. Input Output Scenario Let's look into the input output scenario, where there is a floating point number having some digits after decimal point. Input = 45.36346323 Output = 8 As we can see in the above snippet there are 8 digits in the floating point number after the decimal point. To achieve this task, we'll explore three different methods using isInteger(), toString(), and split() methods. Method 1: Using ... Read More
Finding words that start with a specific letter is a common requirement in JavaScript applications. This guide shows different approaches to locate the first array element beginning with a specified character. Problem Statement We need to write a JavaScript function that takes an array of strings and a character, then returns the index of the first string starting with that character. Using substring() Method The substring() method extracts the first character for comparison: const names = ['Naman', 'Kartik', 'Anmol', 'Rajat', 'Keshav', 'Harsh', 'Suresh', 'Rahul']; const firstIndexOf = (arr = [], char = '') ... Read More