HTML-CSS: Mouse cursor gradient tracking
HTML-CSS : Exercise-8 with Solution
Using HTML, CSS, JavaScript create a hover effect where the gradient follows the mouse cursor.
- Declare two CSS variables, --x and --y, used to track the position of the mouse on the button.
- Declare a CSS variable, --size, used to modify the gradient's dimensions.
- Use background: radial-gradient(circle closest-side, pink, transparent); to create the gradient at the correct position.
- Use Document.querySelector() and EventTarget.addEventListener() to register a handler for the 'mousemove' event.
- Use Element.getBoundingClientRect() and CSSStyleDeclaration.setProperty() to update the values of the --x and --y CSS variables.
HTML Code:
<!--License: https://bit.ly/3GjrtVF-->
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<title>Using HTML, CSS, JavaScript create a hover effect where the gradient follows the mouse cursor</title>
</head>
<body>
<strong>Preview:</strong><br>
<button class="mouse-cursor-gradient-tracking">
<span>Hover me</span></button>
</body>
</html>
CSS Code:
<style>
.mouse-cursor-gradient-tracking {
position: relative;
background: #7983ff;
padding: 0.5rem 1rem;
font-size: 1.2rem;
border: none;
color: white;
cursor: pointer;
outline: none;
overflow: hidden;
}
.mouse-cursor-gradient-tracking span {
position: relative;
}
.mouse-cursor-gradient-tracking:before {
--size: 0;
content: '';
position: absolute;
left: var(--x);
top: var(--y);
width: var(--size);
height: var(--size);
background: radial-gradient(circle closest-side, red, transparent);
transform: translate(-50%, -50%);
transition: width 0.2s ease, height 0.2s ease;
}
.mouse-cursor-gradient-tracking:hover:before {
--size: 200px;
}
}
</style>
JavaScript Code:
<script>
let btn = document.querySelector('.mouse-cursor-gradient-tracking');
btn.addEventListener('mousemove', e => {
let rect = e.target.getBoundingClientRect();
let x = e.clientX - rect.left;
let y = e.clientY - rect.top;
btn.style.setProperty('--x', x + 'px');
btn.style.setProperty('--y', y + 'px');
});
</script>
HTML-CSS Editor:
See the Pen html-css-practical-exercises by w3resource (@w3resource) on CodePen.
What is the difficulty level of this exercise?
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HTML-CSS: Tips of the Day
Two divs side by side - Fluid display
#sides{ margin:0; } #left{ float:left; width:75%; overflow:hidden; } #right{ float:left; width:25%; overflow:hidden; }
Ref: https://bit.ly/3EN8QKy
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