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Articles by Yaswanth Varma
Page 21 of 31
Set PIN validation with JavaScript?
In this article, we will discuss how to set up PIN validation using JavaScript. We will cover creating prompts for users to enter their PIN number, validating input against stored values, and returning appropriate responses based on the validation result. Data validation is the procedure used to ensure that user input is accurate, reliable, and clean. PIN validation typically checks the length, format, and data type to ensure the PIN contains only digits and meets specific requirements. We can validate PINs based on length (usually 4 or 6 digits) and ensure the input contains only numeric characters. Let's ...
Read MoreIs it possible to change the value of the function parameter in JavaScript?
In this article we are going to find out whether it is possible to change the value of the function parameter in JavaScript. A function accepts certain values as parameters and later while calling this function we need to pass values for these parameters as arguments. Typically a function definition contains the name of the function, parameters (optional) and the body of the function. Syntax Following is the syntax for function parameters − function functionName(parameter1, parameter2, parameter3) { // Statements } Yes, it is possible to change the value of ...
Read MoreDynamically replace data based on matched RegEx - JavaScript?
Regex (Regular Expressions) is used to match patterns in strings of text. With JavaScript, you can use regex to dynamically replace data based on matched patterns using the replace() method. This article will explain how to use regex and JavaScript together to make dynamic replacements in your code. We'll cover the basics of regex syntax and practical examples for template replacement. Using replace() Method The replace() method in JavaScript searches a string for a specified value or regular expression and returns a new string with replacements. The original string remains unchanged. Syntax string.replace(searchValue, newValue) ...
Read MoreJavaScript regex - How to replace special characters?
Characters that are neither alphabetical nor numeric are known as special characters. Special characters are essentially all unreadable characters, including punctuation, accent, and symbol marks. Remove any special characters from the string to make it easier to read and understand. Before we jump into the article let's have a quick view on the regex expression in JavaScript. Regex Expression in JavaScript Regular expressions are patterns that can be used to match character combinations in strings. Regular expressions are objects in JavaScript. These patterns can be used with the exec() and test() methods of RegExp as well as ...
Read MoreInsert a new CSS rule while working on JavaScript?
Adding a new CSS rule can help to create the desired look and feel for your web page or application. This article will explain how to insert a new CSS rule while working on JavaScript. It will provide step-by-step instructions on how to write and apply the necessary code in order to achieve the desired result. Additionally, we will also discuss some of the potential problems that may arise when inserting a new CSS rule into an existing project. The style sheet language known as CSS (cascading style sheets), is used to shape the HTML elements that will ...
Read MoreES6/ECMA6 template literals not working in JavaScript?
Template literals are a powerful feature of ES6 JavaScript that use backticks (`) instead of quotes. However, they may not work due to browser compatibility, syntax errors, or incorrect usage. This article covers common issues with template literals and their solutions, helping you debug and properly implement this ES6 feature. What Are Template Literals? Template literals use backticks (`) instead of quotes and support multi-line strings and embedded expressions using ${expression} syntax. Syntax const str = `string value`; const interpolated = `Hello ${name}!`; Common Issues and Solutions Issue 1: Browser Compatibility ...
Read MoreMultiply only specific value in a JavaScript object?
The ability to multiply only specific values in a JavaScript object can be a useful tool for performing calculations or making modifications to data. By using methods like map(), forEach(), and traditional loops, you can efficiently target and modify values that meet certain criteria. An object in JavaScript is a separate entity having properties and a type. This article demonstrates various approaches to selectively multiply values within objects and arrays. Method 1: Using Array.map() to Transform Object Properties In this example, we multiply the value property of each object in an array by 3: ...
Read MoreReturn correct value from recursive indexOf in JavaScript?
A computer pattern or idea called recursion is present in many programming languages, including JavaScript. It is a feature used to build a function that repeatedly calls itself, but with a smaller input each time, until the intended outcome of the code is realized. In this article, we will return the correct value from a recursive indexOf() function in JavaScript. Let's dive into the article for a better understanding. Understanding Recursive indexOf Implementation The position of the first occurrence of a value in a string or array is returned by the indexOf() method. -1 is returned by ...
Read MoreDelete all text up to a character in a URL- JavaScript?
This article explains how to use JavaScript's replace() method with regular expressions to delete all text up to a specific character in a URL. This technique is useful for extracting filenames, removing domain information, or cleaning URL strings. A regular expression (RegExp) is a pattern used to match character combinations in strings. In JavaScript, regular expressions are objects with properties and methods for pattern matching and text manipulation. The replace() Method The replace() method searches for a value or regular expression pattern in a string and returns a new string with the matched content replaced. The original ...
Read MoreJavaScript - Get href value
JavaScript Get href Value is a useful tool for web developers and designers who need to quickly access the value of an HTML element's href attribute. This article will provide step-by-step instructions on how to use JavaScript to get the value of an href attribute on a webpage, as well as some tips and tricks for getting the most out of this powerful feature. The ability to quickly obtain the values from an HTML element's attributes can help make development faster and more efficient, so let's get started! The value of the href attribute in JavaScript is a ...
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