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When working with strings in JavaScript, you might encounter scenarios where you need to clean or format text by removing specific portions. A common task is to remove text after a comma and the following word. This can be achieved efficiently using JavaScript Regular Expressions (Regex). In this article, we’ll show you how to do it step-by-step. Why Use Regex for Text Manipulation? Regex, short for Regular Expressions, is a powerful tool for pattern matching and text processing. It allows you to identify and manipulate text patterns with precision, making tasks like cleaning data or reformatting strings much simpler. How ... Read More
In this article, we will learn two different approaches to computing the focal length of a spherical mirror using Java. While the second method makes use of Object-Oriented Programming (OOP) concepts for a more generic and flexible approach the first method is a simple functional implementation. Finding Focal Length Spherical mirrors play a vital role in optical systems, from telescopes and microscopes to vehicle rearview mirrors. These mirrors, either concave or convex, focus or diverge light, respectively, based on their geometry. The focal length, a key characteristic of spherical mirrors, determines how the mirror bends light.The focal length of a ... Read More
In this article, we will learn to access browsing history using Javascript. In web development, accessing a user’s browsing history can improve user experience and provide personalized content. However, due to privacy concerns and security reasons, modern web browsers limit the amount of browsing history accessible via JavaScript. What is Browsing History? Browsing history refers to the list of web pages that a user has visited over a while. Browsers typically store this data locally, allowing users to navigate back and forth through the pages they’ve visited. The window.history Object In JavaScript, the window.history object allows interaction with the browser’s ... Read More
An interface with no methods in it is referred to as a marker interface, also known as a tagging interface. There are two basic design purposes of marker interfaces. Creates a common parent It is used to provide a common parent interface for a group of related interfaces. When an interface like "eventlistener" is extended by dozens of other interfaces in the Java API, we can use a marker interface to create a common parent among a group of interfaces. For example, when an interface extends EventListener, the JVM knows that this particular interface is going to be used in an ... Read More
In this article, we will discuss how to display the two-digit month. A two-digit month ensures that even the first month (i.e., January) is formatted to display as 01 instead of 1. This formatting provides a consistent two-digit representation for all months. To Display two-digit month in Java is quite easy. Let us learn the following ways: Displaying Two-Digit Month Using the "%tm" Specifier To retrieve a two-digit month from a given date, we can use the "%tm" specifier. This format specifier is used with the printf() method to display the month of a date as a two-digit number. Example ... Read More
Sometimes while working with with dates in JavaScript, it is common to need specific dates for calculations or validations. In this problem, we are given a date in the form of year-month-date and we have to subtract one month from it. In this article, we are going to learn how we can subtract one month from a given date using Moment.JS. Prerequisite Moment.js: Moment.js is a popular JavaScript library used for dealing with dates. This library is used to modify, parse, validate, manipulate, and display dates and times in JavaScript. Install Moment.js We ... Read More
Sometimes while working with dates and times, we need to manipulate or normalize them to a specific time. One such common need is to reset a date's time to the start of the day, i.e. 00:00:00 midnight. In this article, we are going to learn different approaches to set the time to 00:00:00 using Moment.js. Prerequisite Moment.js: Moment.js is a popular JavaScript library used to deal with dates. This library is used to modify, parse, validate, manipulate, and display dates and times in JavaScript. Install Moment.js We ... Read More
In this article, we will learn how to copy text to the clipboard in ReactJS. There are two most commonly used methods: the copy-to-clipboard package and the Clipboard API. The copy-to-clipboard package provides a copy() function that allows us to copy text. The Clipboard API is a web browser API that also provides a few functions for clipboard interaction, including copying text. Prerequisites Installed npm ReactJS useState hook Approaches to Copy Text to Clipboard There are two primary approaches to copying text to the clipboard in ReactJS: ... Read More
Suppose we have an array, and we need to check whether each element has a unique number of occurrences. If no such element exists, we return false; otherwise, we return true. For example, given the array [1, 1, 2, 2, 2, 3, 4, 4, 4, 4], the function will return true because no two elements have the same number of occurrences: 1 occurs twice, 2 occurs three times, 3 occurs once, and 4 occurs four times. Various Techniques to Find Unique Occurrences Following are the various techniques to find the unique occurrence of the elements in a list − ... Read More
The int main Function The int main function indicates that the program returns an integer value, typically 0, at the end of its execution. A return value of 0 signifies that the program has been executed successfully. The syntax of int main is as follows − int main(){ --- --- return 0; } Example Below is a C program for the int main() function without arguments. It uses recursion to decrement a static variable a from 10 to 0, printing its value after each decrement. The main function calls itself until a reaches 0, then returns 0. #include ... Read More