To validate an email address in JavaScript, you can use a regular expression (regex) pattern.

No, there is no parent selector in CSS. CSS selectors allow you to select elements based on their tag name, class, and id, as well as their attributes and their relationship to other elements in the DOM (Document Object Model). However, there is no way to select an element based solely

To select the first element with a specific class in CSS, you can use the :first-of-type pseudo-class in combination with the class selector.

To change an element's class with JavaScript, you can use the className property to set the class to a new value.

In JavaScript, a closure is a function that has access to the variables in its outer (enclosing) function's scope chain.

To remove a property from a JavaScript object, you can use the delete operator.

To update all the dependencies in your package.json file to their latest version, you can use the npm install command with the --save flag or the --save-dev flag, depending on whether you want to update the dependencies that are required for your project to run (--save) or the dependencies that are only needed for devel