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This is a keypress event where a certain element gets focused when the key that starts that element is pressed down. This is written in JavaScript. To handle the keypress event, the “key-down” function has been used in and to validate it to work only for alpha characters, a list has been declared with all the alphabetical characters with its Hexa value. There are three functions used here; handleAlphaKeyPresses, matchElemToKey and cycle focus and the use of them are respectively, to apply the keypress event, to find all the matching elements and return them and to make the “li > an” element. CSS styles have been used to apply mouse hover styles with the “hover” class and to apply the styles for the selected div with the “focus” class. Source: https://codepen.io/miclgael/pen/LJJvyP?&page=1

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