html - What will be the basic JavaScript code for a button? -

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i need button shows me date below when use hover mouse on , hides when hover mouse out. in picture below:

example

you can read more event handling in javascript https://developer.mozilla.org/en/docs/web/api/eventtarget/addeventlistener , fiddle little. have declare 2 listeners on button, 'mouseenter' , 'mouseleave' event types (1st argument of addeventlistener), , use algorithms of choice executed in listener functions (2nd argument of addeventlistener).


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