Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Economics & Finance
We need to find the smallest number from a set of numbers without using JavaScript's built-in Math.min() function. This requires implementing our own comparison logic. Approach Using While Loop We'll iterate through all numbers and keep track of the smallest value found so far, updating it whenever we encounter a smaller number. Example const numbers = [12, 5, 7, 43, -32, -323, 5, 6, 7, 767, 23, 7]; const findMin = (...numbers) => { let min = Infinity, len = 0; while(len < numbers.length) { ... Read More
JavaScript provides several ways to create objects from arrays and define key-value pairs. This is useful when transforming data structures or converting between different formats. Using Object.entries() with map() The most common approach uses Object.entries() to convert an object into an array of key-value pairs, then map() to transform the structure: var studentObject = { 101: "John", 102: "David", 103: "Bob" }; var studentDetails = Object.entries(studentObject).map(([studentId, studentName]) => ({ studentId, studentName })); console.log(studentDetails); ... Read More
We need to write a JavaScript function that takes two numbers m (product) and n (sum) and returns two numbers whose sum equals n and product equals m. If no such numbers exist, the function should return false. This is essentially solving a quadratic equation where we need to find two numbers x and y such that x + y = n and x × y = m. Mathematical Approach We can solve this using the quadratic formula. If x + y = n and x × y = m, then x and y are roots of ... Read More
To get the pathname part of the href attribute of an area in JavaScript, use the pathname property. This property extracts just the path portion from a URL, excluding the protocol, domain, and query parameters. Syntax areaElement.pathname Example You can try to run the following code to display the pathname part of an area element's href attribute. ... Read More
HTML5 provides several input types for date and time, but formatting them requires JavaScript. The default browser format can be customized using JavaScript date methods or libraries. HTML5 Date Input Types HTML5 offers various date and time input types: Basic Date Formatting with JavaScript You can format dates using JavaScript's built-in methods: const dateInput = document.getElementById('dateInput'); const output = document.getElementById('output'); dateInput.addEventListener('change', function() { const date = new Date(this.value); ... Read More
You can put your CSS rules into an HTML document using the element. This tag is placed inside ... tags. Rules defined using this syntax will be applied to all the elements available in the document. Syntax /* CSS rules go here */ selector { property: value; } Example Following is an example of embedded CSS ... Read More
In this problem statement, our task is to calculate the median of an array with the help of Javascript functionalities. There are several ways that can be used to solve this task. One simple method to calculate median is using the built-in function of Javascript. Understanding the Problem The problem statement is to write a function in Javascript that will help to calculate the median of a given array. The median is the middle value when numbers are arranged in ascending order. For example: Array [1, 2, 3, 4, 5] has median 3 (middle element) Array ... Read More
Given an array of arrays, each of which contains a set of numbers. We have to write a function that returns an array where each item is the sum of all the items in the corresponding subarray. For example, if we have nested arrays with numbers, we want to calculate the sum of each inner array and return those sums as a new array. Example Input and Expected Output If the input array is: const numbers = [ [1, 2, 3, 4], [5, 6, 7], [8, ... Read More
In this tutorial, we will learn how to add hours and minutes to a date with JavaScript. We have multiple methods to achieve this which are the following. Add hours using the setHours() Method. Add minutes using the setMinutes() Method. Add hours or minutes with the getTime() Method. Add hours using the setHours Method JavaScript date setHours() method sets the hours for a specified date according to local time. Syntax Following is the syntax to apply the setHours() method to add ... Read More
To set multiple background properties in JavaScript, use the background property. This shorthand property allows you to set background color, image, position, repeat, and other background-related properties in a single declaration. Syntax element.style.background = "color image repeat attachment position"; Background Property Values The background shorthand can include the following properties in any order: background-color: Sets the background color background-image: Sets the background image using url() background-repeat: Controls image repetition (repeat, no-repeat, repeat-x, repeat-y) background-position: Sets image position (left, right, center, top, bottom, or pixel values) background-attachment: Controls scrolling behavior (scroll, fixed) ... Read More