Add title attribute from css

Constructing a CSS tooltip

With masterful strokes of the ::after pseudo-element and liberal application of CSS properties, you can fashion yourself a functional tooltip. Marvel at these incantations:

.element {
  position: relative; /* Just making a home for our tooltip */
}

.element:hover::after {
  content: "Tooltip text"; /* Fun fact: CSS believes in speaking things into existence */
  position: absolute;
  top: 100%; /* Let's hang out downstairs, says the tooltip */
  left: 50%; /* Why lean when you can be dead center */
  transform: translateX(-50%);
  padding: 8px;
  width: max-content;
  background-color: black; /* Obligatory dark mode */
  color: white; /* For visibility and aesthetics alike */
  text-align: center; /* Aim for perfection */
  border-radius: 4px; /* Rounding off the rough edges, literally */
  display: none; /* The art of invisibility, CSS edition */
}

.element:hover::after {
  display: block; /* Abra-ca-dabra! */
}
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Side note: Careful! Don't overburden your DOM with unnecessary elements just for the sake of aesthetics.

Beyond CSS: Dynamic and server-side options

JavaScript's "title" whisperer

JavaScript is a master of manipulating HTML attributes, including title. Behold this wizardry:

// Vanilla JavaScript
document.querySelector('.element').setAttribute('title', 'Dynamic tooltip text'); // JS to the rescue!

// jQuery for the win
$('.element').attr('title', 'Dynamic tooltip text'); // When CSS refuses to play ball, call jQuery
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Need a solution within project constraints? JavaScript's got your back.

Server-side title magic

If you've got elements singing to the tune of server-side rendering, you can perform your tricks there to alter the title attribute.

Performance and accessibility considerations

Remember, great power comes with great responsibility. Extensive use of CSS tooltips might raise eyebrows of accessibility guidelines and pose scalability challenges. You might need to consider performance-friendly and screen-reader accessible alternatives.