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Javascript Articles
Page 162 of 534
How to Get the Content of an HTML Comment Using JavaScript
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 MoreHow Do You Make An If Statement In JavaScript That Checks If A Variable is Equal To A Certain Word?
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 MoreDifference between JavaScript and C#
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 MoreDifference between CSS and JavaScript
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 MoreHow to create an id using mongoose in Javascript?
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 MoreFinding the time elapsed in JavaScript
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 MoreFind the OR and AND of Array elements using JavaScript
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 MoreHow to concatenate regex literals in JavaScript?
The regex literals are regular expressions, a sequence of characters to match the strings. Sometimes, developers require to combine regular expressions. However, a regular expression is also one type of string, but we can’t concat them like a string using the ‘+’ operator. So, we first require to get flags from both regular expressions. After that, we must filter all unique flags and create a new Regex after combining multiple Regex literals. Syntax Users can follow the syntax below to concatenate regex literals in JavaScript. let allFlags = regex1.flags + regex2.flags; let uniqueFlags = new Set(allFlags.split('')); allFlags = [...uniqueFlags].join(''); let ...
Read MoreHow to load CSS files using JavaScript?
Sometimes, the task is change the page themes and to use different CSS files on the same page content. In such tasks the need is to fetch a CSS and load it dynamically while selecting a theme. In this case the CSS file has to be accessed, loaded and even selected through a javascript program. Using HTML and javascript code this process of loading the CSS file is demonstrated in this article. This is shown by using two different examples. In the first example, a CSS file is selected on the windows load event. In the second example, two buttons ...
Read MoreHow to Send Axios Delete to the Backend ReactJS in JavaScript
What is Send Axios Delete? Deleting data from a backend using ReactJS and Axios can be a challenging task. However, with the right approach and knowledge, you can easily achieve this task. In this article, we'll explore how to send an Axios delete request to the backend in ReactJS using JavaScript. We'll cover two different approaches with code and explanations, as well as two working examples. So, let's dive in! Algorithm To commence our discourse, it is of utmost importance to apprehend the procedure for transmitting an Axios obliteration entreaty to the back end when utilizing ReactJS. Here are the ...
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