How can hasClass and addClass be utilized?

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The hasClass method checks if an element has a certain class and returns either true or false. It is useful when you want to check if an element has been assigned a certain class before performing an action. The syntax for hasClass is as follows:

$(selector).hasClass(className)

The addClass method adds one or more classes to an element. It is useful when you want to dynamically modify the appearance or behavior of an element based on user interaction or other events. The syntax for addClass is as follows:

$(selector).addClass(className)

The className can be a single class or multiple classes separated by a space. For example:

$(selector).addClass("class1 class2")

This will add both class1 and class2 to the selected element.

Overall, these methods are useful for managing the classes of HTML elements using jQuery and are commonly used in web development to create dynamic and interactive user interfaces.