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Tag Archives: JavaScript-Questions

document.querySelector() will return the first element that matches the specified group of selectors. If no match is found ‘null’ is returned. Syntax: var input =… Read More
Sending an HTTP request to the server using AJAX is the most common way of fetching data these days. It provides us with methods to… Read More
In this article article, let’s first discuss the Reference error and then come to onclick function and then we come over the question Uncaught ReferenceError… Read More
The “ReferenceError” is a very common error that can occur when programming in JavaScript. The “onerror” event is a great way to catch these errors… Read More
Few CSS properties are not supported in some browsers, thus it is required to check whether a CSS property & its value are supported in… Read More
In JavaScript, there are two ways to create a promise: using the Promise.resolve method or using the new Promise constructor. While both ways achieve the… Read More
In this article, we will learn how to build dynamic animations on our webpage using the canvas elements in HTML5. The main purpose of this… Read More
In this article, we will learn to find the maximum resolution supported by the camera. We need to request camera access from the user and… Read More
In this article, we will try to understand how we may handle Promise’s rejection with a try/catch block while using await inside an asynchronous (having… Read More
It would be great if selecting text on a webpage showed some options like copy, paste, or share. A selection menu accomplishes this. Basically, it… Read More
In this article, we will try to analyze how we may handle an undefined key (or a property of an object) in JavaScript using certain… Read More
CoffeeScript is a lightweight programming language that compiles into JavaScript. It provides simple and easy-to-learn syntax, avoiding the complex syntax of JavaScript. CoffeeScript is influenced… Read More
In this article, we will try to understand what is the scope of a variable as well as its function (or a method). We will… Read More
tsconfig.json file is a file of JSON format which allows us to point the root level files and different compiler options to setup that require… Read More
Here the job is to apply restrictions so that a function can not be called more than one time. The user will be able to… Read More

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