Query selectors allow you to select and manipulate HTML element(s). jQuery selectors are used to "find" (or select) HTML elements based on their name, id, classes, types, attributes, values of attributes and much more. It's based on the existing CSS Selectors, and in addition, it has some own custom selectors. All selectors in jQuery start with the dollar sign and parentheses: $().
All the different visitor's actions that a web page can respond to are called events. An event represents the precise moment when something happens. Examples: moving a mouse over an element, selecting a radio button, and clicking on an element
Hover over my image and see what happens!
With jQuery, you can hide and show HTML elements with the hide() and show() methods
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