Sometimes when inserting images into HTML sites, the image may not load for the following reasons − Because of image URL wrong Network issues The task we are going to perform was detecting if an img element load has started and/or request has made to the server. Before this let’s have a quick view on the HTML tag. HTML tag To insert an image into a webpage, use the HTML tag. In modern websites, images are linked to web pages using the element, which contains space for the image. This prevents websites from directly adding ... Read More

Any web browser ignores a comment, which is a piece of code. It's best practice to add comments to your HTML code, especially for complicated publications, so that anyone looking at the code can easily identify sections of the page and any extra notes. Comments make your code easier to read and understand for you and other users. In between tags, HTML comments are placed. Therefore, the browser will regard any content included in tags as a comment and will do nothing with it. Syntax Following is the syntax for comment - Let’s look into the following examples ... Read More

The task we are going to perform in this article is about how do you make an if statement in JavaScript that checks if a variable is equal to a certain word. What is an if...else statement When the condition in the if statement is true, a block of code will be executed. This is a form of conditional statement. The else block will be invoked if the condition is false. In if statements, truthy and falsy values are transformed to true or false. Syntax Following is the syntax for if else statement if (condition is true) { ... Read More

JavaScript is a scripting language which is used to develop HTML pages that are interactive with users. It is usually run on web browsers. NodeJS is a platform or runtime environment using which we can run JavaScript in a system rather than a browser. What is JavaScript? JavaScript is a front-end programming language used in web development. It is a lightweight object oriented scripting language that make the web page dynamic and interactive with users. HTML creates website (structure layer), CSS makes it more attractive (design layer) and JavaScript allows the users to interact with these websites rather than simply ... Read More

Two programming languages that have been widely used in the field of software development are JavaScript and C# (pronounce "C sharp"). Both languages are employed for various purposes and each has its own advantages and disadvantages. The main application of the programming language JavaScript is the creation of websites. It is frequently used to build dynamic and interactive web sites. Because JavaScript is a client-side language, it executes in the client's browser rather than on the server. It is a popular option for novices because it is simple to learn and has a low entry barrier. On the ... Read More

A website is developed using HTML. HTML is the backbone and provides the skeleton for the website. But using HTML alone, we can’t create our desired website. Cascade styling sheets is another language that adds another layer to the website. It applies formatting to the website, changes the layout of the website and makes the website appear beautiful. JavaScript is a programming language that makes a website functionable. It adds animations, pop up screens and a lot more to interact with the user. What is CSS? CSS stands for Cascading Style Sheets. CSS is a language which is used ... Read More

In this tutorial, we will learn to create an id using mongoose in JavaScript. Users can use the Mongoose NPM package in NodeJS to use MongoDB with NodeJS or connect MongoDB with the application. While storing the data in the MongoDB database, we must add a unique id to every data collection. However, if we don’t add an id, it generates automatically and adds to the data. Syntax Users can follow the syntax below to create an id using mongoose in JavaScript. var newId = new mongoose.mongo.ObjectId(); In the above syntax, we access the ‘mongo’ from the mongoose and ... Read More

We can get the union of two arrays by merging both arrays and removing duplicate elements, and the union gives unique elements from both arrays. In this tutorial, we will learn to compute the union of JavaScript arrays using various approaches. Use the set() Data Structure The first approach is using the set() data structure. The set data structure can contain only unique elements. We can add all elements of both arrays into the set and create a new array from the set’s elements to create a union. Syntax Users can follow the syntax below to compute the union of ... Read More

Sometimes, it requires finding the total time elapsed while performing some operations in JavaScript. For example, we require to find the total time elapsed from users who have updated their profiles. Also, there can be other similar use cases where we need to find the difference between the particular time and the current time, finding the total time elapsed. Here, we will learn various approaches to finding the time elapsed in JavaScript. Using the Date() Object to find the time Elapsed in JavaScript In JavaScript, we can get the current time using the Date() object constructor. It returns the total ... Read More

In JavaScript, we can use the ‘&&’ operator to perform the AND operation between two elements and the ‘||’ operator to perform OR operation between two elements. Here, we will learn to perform OR and AND operations between every element of the array. Use the for Loop We can use the for loop to iterate through the array elements a nd do an OR operation of the array element with the resultant elements. Syntax Users can follow the syntax below to use the for loop to take OR or AND operation of every element. for () { ... Read More