The regular expression is a pattern containing various characters. We can use the regular expression to search whether a string contains a particular pattern. Here, we will learn to create a regular expression to validate the various mathematical formulas. We will use the test() or match() method to check ... Read More

In the ES6 version of JavaScript, literals are introduced. JavaScript contains object literals, array literals, Numeric literals, RegExp literals, etc. Also, it contains the string literals. The string literal allows us to create multiline strings without any backslash characters, add any word or sentence to the quote, and add variables ... Read More

Using JavaScript or jQuery, we can check whether a file exists and retrieve metadata about the file, such as its size, content type, last modified date, etc., without retrieving the actual file. The HTTP HEAD request is used in this case. An HTTP HEAD request is a type of HTTP ... Read More

JavaScript is a loosely typed programming language, meaning there is no such rule to declare the variable type. A variable can store multiple data types in a program, so it is essential to understand the variable type before using it. In JavaScript, we can use the typeof operator to check ... Read More

We mainly use JavaScript to create dynamic web applications. This kind of scripting language makes a web page look interactive. JavaScript significantly adds some logic to our website. As we mentioned, the user can check whether the background image is loaded. Web developers can understand that the page is loaded ... Read More

In HTML, Canvas is very important when we want to show animation or 3D objects on the webpage using only HTML and JavaScript. The offscreenCanvas allows users to render the animations and graphics off-screen. It means when we use the canvas, it interacts with the user via the main thread ... Read More

We can access the HTML element using various methods in vanilla JavaScript or jQuery, a featured library of JavaScript. Sometimes, after accessing the DOM elements, developers may require to check if both accessed elements are the same or not. In this tutorial, we will learn to use the strict equality ... Read More

In JavaScript, an array is an object with an index as a key and array values as a value of a particular key of an array object. Sometimes, we require to check if two arrays are the same or not. The first solution that comes to mind is using the ... Read More

Using JavaScript, we will learn to clear all div’s content inside a parent div. In HTML, we can create various elements and add other elements as a child of the parent div. Also, we can add different HTML to every child element. Sometimes, we may require to ... Read More

While working with HTML and CSS to create a web page, we require to choose a color from the color picker. Also, sometimes we may require to select the background color through the color picker input. In this tutorial, we will learn different approaches which allow users to choose a ... Read More