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Articles by Rushi Javiya
137 articles
How to Create an Image Element Dynamically using JavaScript?
To create an image element dynamically using JavaScript, we can use various approaches based on our use case. We will explore three effective methods in this article with complete examples and step-by-step explanations. Approaches to Create an Image Element Here are the three main approaches to create an image element dynamically using JavaScript: Using createElement() Method Using Image() Constructor Using innerHTML Property Using createElement() Method The createElement() method is the most standard way to create DOM elements dynamically. This approach creates ...
Read MoreHow to create and download CSV file in JavaScript?
JavaScript provides powerful capabilities to manipulate data and handle various file formats. When developing web applications, you often need to export data as CSV files for users to download - such as order details from e-commerce platforms or transaction records from banking applications. In this tutorial, we will learn to create CSV files from JavaScript data and automatically download them to the user's device. Syntax The basic approach involves converting data to CSV format and using a virtual anchor element for download: // Convert data to CSV format let csvData = 'Header1, Header2, Header3'; data.forEach(function ...
Read MoreHow to create bar chart in react using material UI and Devexpress?
Material UI is a popular React UI library that provides pre-styled components for building modern applications. DevExpress offers the 'dx-react-chart-material-ui' package that seamlessly integrates Material UI styling with powerful charting capabilities. This tutorial demonstrates how to create various types of bar charts using DevExpress charts with Material UI styling in React applications. Prerequisites Install the required packages using these commands: npm install @mui/material @emotion/react @emotion/styled npm install @devexpress/dx-react-chart @devexpress/dx-react-chart-material-ui Basic Syntax The basic structure for creating a DevExpress bar chart with Material UI: ...
Read MoreImplode an array with jQuery/JavaScript
In JavaScript and jQuery, "imploding" an array means joining its elements into a single string. This is commonly needed when displaying lists, generating SQL queries, or creating comma-separated values. We'll explore 4 different approaches to join array elements into strings. Using the Array.join() Method (Recommended) The join() method is the most efficient way to implode an array. It joins all elements into a string with a specified delimiter. Syntax array.join(delimiter) The delimiter parameter is optional. If omitted, elements are separated by commas. Example: Basic Join ...
Read MoreGet the YouTube video ID from a URL using JavaScript
Every YouTube video has a unique URL through which we can access it in the browser. Every YouTube video contains a unique video id, which makes the URL unique. Sometimes, developers need to extract the video id from the YouTube URL. We need to play with the YouTube URL string to extract the video id from the URL, which we will do in this tutorial. We will learn different approaches to getting the video id from a full URL. Using the split() Method JavaScript contains the built-in split() method, which allows users to split the string into ...
Read MoreWhat are the restrictions of web workers on DOM in JavaScript?
JavaScript is a single-threaded programming language, executing all code step-by-step. For computationally intensive tasks like processing large datasets, this can cause performance bottlenecks and poor user experience. Web workers provide a solution by running tasks in background threads, but they have strict limitations when it comes to DOM access. Web workers operate in a separate thread context, isolated from the main thread for security and performance reasons. This isolation creates several important restrictions when working with DOM elements. Key DOM Restrictions of Web Workers 1. No Direct DOM Access Web workers cannot access DOM elements directly. ...
Read MoreHandling Promise rejection with a catch while using await in JavaScript
In JavaScript, when working with async/await syntax, you need proper error handling for rejected promises. While Promise chains use .catch(), async/await functions require try-catch blocks to handle promise rejections. Basic Promise Creation Let's start with the fundamental syntax for creating promises: let testPromise = new Promise((resolve, reject) => { // perform some operation // resolve(value) for success // reject(error) for failure }); Example: Promise with .then() and .catch() Here's how traditional promise handling works with .then() and .catch() methods: ...
Read MoreHow to check if an object is empty using JavaScript?
In JavaScript, checking if an object is empty is a common requirement when working with dynamic data. An empty object contains no properties, and attempting operations on assumed non-empty objects can lead to unexpected behavior. For example, when fetching data from an API, you might receive an empty object if no results are found. Before processing this data, it's essential to verify whether the object contains any properties. We will explore three reliable methods to check if an object is empty in JavaScript. Using Object.keys() Method The Object.keys() method returns an array of all enumerable property ...
Read MoreHow to check for two timestamps for the same day in JavaScript?
The Date object is essential in JavaScript applications for creating and manipulating dates according to developer requirements. A common requirement is checking whether two timestamps represent the same day, which is useful for features like daily task tracking or date-based user activity validation. In this tutorial, we will learn three different approaches to check whether two timestamps are for the same day. This is particularly useful when you need to compare a user's last activity date with the current date. Using getFullYear(), getMonth(), and getDate() Methods The most straightforward approach is to compare the year, month, and ...
Read MoreHow to check whether or not a browser tab is currently active using JavaScript?
Users can open multiple tabs in the browser, and they can also check if any particular tab is currently active or not in the browser. For example, if you have given a proctored test, you can observe that it detects that tab is changed whenever you change the tab in the browser. So, there can be many applications and uses for checking whether the browser tab is active. This tutorial will teach us two methods to check whether the browser's tab is active. Using the onblur() and onfocus() methods of the window object The window object contains ...
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