You can use the ::placeholder pseudo-element in CSS to target the placeholder text of an HTML5 input and change its color.

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.

If you would like to Validate an Email Address in JavaScript have a different ways, Using regular expressions is probably the best way (regex) to match the email address against a pattern.

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.