Javascript Question

description box on mouseover

I am playing with the

onmouseover
event in javascript

I would like a little box to pop up and remain up until there is no
onmouseover
anymore

I think it's called a description box, but I am not sure.

How do I get a little box to pop up with custom text when I put my mouse over certain text, and disappear once I move the mouse to a different object..?

Answer

Assuming popup is the ID of your "description box":

HTML

<div id="parent">
This is the main container.
<div id="popup" style="display: none">some text here</div>
</div>

JavaScript

var e = document.getElementById('parent');
e.onmouseover = function() {
  document.getElementById('popup').style.display = 'block';
}
e.onmouseout = function() {
  document.getElementById('popup').style.display = 'none';
}

Alternatively you can get rid of JavaScript entirely and do it just with CSS:

CSS

#parent #popup {
  display: none;
}

#parent:hover #popup {
  display: block;
}
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