The provided code appears to be a combination of HTML, CSS, and JavaScript for creating an animated star rating system. Let’s break down the different components and functionalities of the code.
##HTML Structure
The HTML structure is relatively simple, consisting of a form with a class of “rating” that contains several input elements representing the star rating options. Each input element has an associated label containing SVG elements for the stars and corresponding textual descriptions. Additionally, there are hidden paragraph elements displaying the text descriptions based on the selected rating.
<!DOCTYPE html>
<html lang="en" >
<head>
<meta charset="UTF-8">
<title>Animated Star Rating - Target Media Agency</title>
<meta name="viewport" content="width=device-width, initial-scale=1, viewport-fit=cover"><link rel='stylesheet' href='https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500&display=swap'><link rel="stylesheet" href="./style.css">
</head>
<body>
<form class="rating">
<div class="rating__stars">
<input id="rating-1" class="rating__input rating__input-1" type="radio" name="rating" value="1">
<input id="rating-2" class="rating__input rating__input-2" type="radio" name="rating" value="2">
<input id="rating-3" class="rating__input rating__input-3" type="radio" name="rating" value="3">
<input id="rating-4" class="rating__input rating__input-4" type="radio" name="rating" value="4">
<input id="rating-5" class="rating__input rating__input-5" type="radio" name="rating" value="5">
<label class="rating__label" for="rating-1">
<svg class="rating__star" width="32" height="32" viewBox="0 0 32 32" aria-hidden="true">
<g transform="translate(16,16)">
<circle class="rating__star-ring" fill="none" stroke="#000" stroke-width="16" r="8" transform="scale(0)" />
</g>
<g stroke="#000" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
<g transform="translate(16,16) rotate(180)">
<polygon class="rating__star-stroke" points="0,15 4.41,6.07 14.27,4.64 7.13,-2.32 8.82,-12.14 0,-7.5 -8.82,-12.14 -7.13,-2.32 -14.27,4.64 -4.41,6.07" fill="none" />
<polygon class="rating__star-fill" points="0,15 4.41,6.07 14.27,4.64 7.13,-2.32 8.82,-12.14 0,-7.5 -8.82,-12.14 -7.13,-2.32 -14.27,4.64 -4.41,6.07" fill="#000" />
</g>
<g transform="translate(16,16)" stroke-dasharray="12 12" stroke-dashoffset="12">
<polyline class="rating__star-line" transform="rotate(0)" points="0 4,0 16" />
<polyline class="rating__star-line" transform="rotate(72)" points="0 4,0 16" />
<polyline class="rating__star-line" transform="rotate(144)" points="0 4,0 16" />
<polyline class="rating__star-line" transform="rotate(216)" points="0 4,0 16" />
<polyline class="rating__star-line" transform="rotate(288)" points="0 4,0 16" />
</g>
</g>
</svg>
<span class="rating__sr">1 star—Terrible</span>
</label>
<label class="rating__label" for="rating-2">
<svg class="rating__star" width="32" height="32" viewBox="0 0 32 32" aria-hidden="true">
<g transform="translate(16,16)">
<circle class="rating__star-ring" fill="none" stroke="#000" stroke-width="16" r="8" transform="scale(0)" />
</g>
<g stroke="#000" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
<g transform="translate(16,16) rotate(180)">
<polygon class="rating__star-stroke" points="0,15 4.41,6.07 14.27,4.64 7.13,-2.32 8.82,-12.14 0,-7.5 -8.82,-12.14 -7.13,-2.32 -14.27,4.64 -4.41,6.07" fill="none" />
<polygon class="rating__star-fill" points="0,15 4.41,6.07 14.27,4.64 7.13,-2.32 8.82,-12.14 0,-7.5 -8.82,-12.14 -7.13,-2.32 -14.27,4.64 -4.41,6.07" fill="#000" />
</g>
<g transform="translate(16,16)" stroke-dasharray="12 12" stroke-dashoffset="12">
<polyline class="rating__star-line" transform="rotate(0)" points="0 4,0 16" />
<polyline class="rating__star-line" transform="rotate(72)" points="0 4,0 16" />
<polyline class="rating__star-line" transform="rotate(144)" points="0 4,0 16" />
<polyline class="rating__star-line" transform="rotate(216)" points="0 4,0 16" />
<polyline class="rating__star-line" transform="rotate(288)" points="0 4,0 16" />
</g>
</g>
</svg>
<span class="rating__sr">2 stars—Bad</span>
</label>
<label class="rating__label" for="rating-3">
<svg class="rating__star" width="32" height="32" viewBox="0 0 32 32" aria-hidden="true">
<g transform="translate(16,16)">
<circle class="rating__star-ring" fill="none" stroke="#000" stroke-width="16" r="8" transform="scale(0)" />
</g>
<g stroke="#000" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
<g transform="translate(16,16) rotate(180)">
<polygon class="rating__star-stroke" points="0,15 4.41,6.07 14.27,4.64 7.13,-2.32 8.82,-12.14 0,-7.5 -8.82,-12.14 -7.13,-2.32 -14.27,4.64 -4.41,6.07" fill="none" />
<polygon class="rating__star-fill" points="0,15 4.41,6.07 14.27,4.64 7.13,-2.32 8.82,-12.14 0,-7.5 -8.82,-12.14 -7.13,-2.32 -14.27,4.64 -4.41,6.07" fill="#000" />
</g>
<g transform="translate(16,16)" stroke-dasharray="12 12" stroke-dashoffset="12">
<polyline class="rating__star-line" transform="rotate(0)" points="0 4,0 16" />
<polyline class="rating__star-line" transform="rotate(72)" points="0 4,0 16" />
<polyline class="rating__star-line" transform="rotate(144)" points="0 4,0 16" />
<polyline class="rating__star-line" transform="rotate(216)" points="0 4,0 16" />
<polyline class="rating__star-line" transform="rotate(288)" points="0 4,0 16" />
</g>
</g>
</svg>
<span class="rating__sr">3 stars—OK</span>
</label>
<label class="rating__label" for="rating-4">
<svg class="rating__star" width="32" height="32" viewBox="0 0 32 32" aria-hidden="true">
<g transform="translate(16,16)">
<circle class="rating__star-ring" fill="none" stroke="#000" stroke-width="16" r="8" transform="scale(0)" />
</g>
<g stroke="#000" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
<g transform="translate(16,16) rotate(180)">
<polygon class="rating__star-stroke" points="0,15 4.41,6.07 14.27,4.64 7.13,-2.32 8.82,-12.14 0,-7.5 -8.82,-12.14 -7.13,-2.32 -14.27,4.64 -4.41,6.07" fill="none" />
<polygon class="rating__star-fill" points="0,15 4.41,6.07 14.27,4.64 7.13,-2.32 8.82,-12.14 0,-7.5 -8.82,-12.14 -7.13,-2.32 -14.27,4.64 -4.41,6.07" fill="#000" />
</g>
<g transform="translate(16,16)" stroke-dasharray="12 12" stroke-dashoffset="12">
<polyline class="rating__star-line" transform="rotate(0)" points="0 4,0 16" />
<polyline class="rating__star-line" transform="rotate(72)" points="0 4,0 16" />
<polyline class="rating__star-line" transform="rotate(144)" points="0 4,0 16" />
<polyline class="rating__star-line" transform="rotate(216)" points="0 4,0 16" />
<polyline class="rating__star-line" transform="rotate(288)" points="0 4,0 16" />
</g>
</g>
</svg>
<span class="rating__sr">4 stars—Good</span>
</label>
<label class="rating__label" for="rating-5">
<svg class="rating__star" width="32" height="32" viewBox="0 0 32 32" aria-hidden="true">
<g transform="translate(16,16)">
<circle class="rating__star-ring" fill="none" stroke="#000" stroke-width="16" r="8" transform="scale(0)" />
</g>
<g stroke="#000" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
<g transform="translate(16,16) rotate(180)">
<polygon class="rating__star-stroke" points="0,15 4.41,6.07 14.27,4.64 7.13,-2.32 8.82,-12.14 0,-7.5 -8.82,-12.14 -7.13,-2.32 -14.27,4.64 -4.41,6.07" fill="none" />
<polygon class="rating__star-fill" points="0,15 4.41,6.07 14.27,4.64 7.13,-2.32 8.82,-12.14 0,-7.5 -8.82,-12.14 -7.13,-2.32 -14.27,4.64 -4.41,6.07" fill="#000" />
</g>
<g transform="translate(16,16)" stroke-dasharray="12 12" stroke-dashoffset="12">
<polyline class="rating__star-line" transform="rotate(0)" points="0 4,0 16" />
<polyline class="rating__star-line" transform="rotate(72)" points="0 4,0 16" />
<polyline class="rating__star-line" transform="rotate(144)" points="0 4,0 16" />
<polyline class="rating__star-line" transform="rotate(216)" points="0 4,0 16" />
<polyline class="rating__star-line" transform="rotate(288)" points="0 4,0 16" />
</g>
</g>
</svg>
<span class="rating__sr">5 stars—Excellent</span>
</label>
<p class="rating__display" data-rating="1" hidden>Terrible</p>
<p class="rating__display" data-rating="2" hidden>Bad</p>
<p class="rating__display" data-rating="3" hidden>OK</p>
<p class="rating__display" data-rating="4" hidden>Good</p>
<p class="rating__display" data-rating="5" hidden>Excellent</p>
</div>
</form>
<!-- partial -->
<script src="./script.js"></script>
</body>
</html>
##CSS Styling
The CSS part begins with a global reset of CSS properties, setting various properties like border, box-sizing, margin, and padding to zero. It then sets several CSS custom properties (–bg, –fg, –primary, –yellow) for defining colors and transitions. The body has a background image, and the rating component is styled to position the stars and their related animations.
* {
border: 0; box-sizing: border-box; margin: 0; padding: 0;}
:root {
--bg: #e3e4e8; --fg: #17181c; --primary: #255ff4; --yellow: #f4a825; --yellow-t: rgba(244, 168, 37, 0); --bezier: cubic-bezier(0.42,0,0.58,1); --trans-dur: 0.3s; font-size: calc(24px + (30 - 24) * (100vw - 320px) / (1280 - 320));}
body {
background-image:url("https://i.postimg.cc/bJVhddQc/back-Target.png"); color: var(--fg); font: 1em/1.5 "DM Sans", sans-serif; display: flex; height: 100vh;
}
.rating {
margin: auto;
}
.rating__display { font-size: 1em; font-weight: 500; min-height: 1.25em; position: absolute; top: 100%; width: 100%; text-align: center;}
.rating__stars {
display: flex; padding-bottom: 0.375em; position: relative;}
.rating__star { display: block; overflow: visible; pointer-events: none; width: 2em; height: 2em;}
.rating__star-ring, .rating__star-fill, .rating__star-line, .rating__star-stroke { animation-duration: 1s; animation-timing-function: ease-in-out; animation-fill-mode: forwards;
}
.rating__star-ring, .rating__star-fill, .rating__star-line { stroke: var(--yellow);}
.rating__star-fill { fill: var(--yellow); transform: scale(0); transition: fill var(--trans-dur) var(--bezier), transform var(--trans-dur) var(--bezier);}
.rating__star-stroke { stroke: #c7cad1; transition: stroke var(--trans-dur);}
.rating__label {
cursor: pointer;
padding: 0.125em;
}
.rating__label--delay1 .rating__star-ring, .rating__label--delay1 .rating__star-fill, .rating__label--delay1 .rating__star-line, .rating__label--delay1 .rating__star-stroke {
animation-delay: 0.05s;
}
.rating__label--delay2 .rating__star-ring, .rating__label--delay2 .rating__star-fill, .rating__label--delay2 .rating__star-line, .rating__label--delay2 .rating__star-stroke {
animation-delay: 0.1s;
}
.rating__label--delay3 .rating__star-ring, .rating__label--delay3 .rating__star-fill, .rating__label--delay3 .rating__star-line, .rating__label--delay3 .rating__star-stroke {
animation-delay: 0.15s;
}
.rating__label--delay4 .rating__star-ring, .rating__label--delay4 .rating__star-fill, .rating__label--delay4 .rating__star-line, .rating__label--delay4 .rating__star-stroke {
animation-delay: 0.2s;
}
.rating__input {
-webkit-appearance: none;
appearance: none;
}
.rating__input:hover ~ [data-rating]:not([hidden]) {
display: none;
}
.rating__input-1:hover ~ [data-rating="1"][hidden], .rating__input-2:hover ~ [data-rating="2"][hidden], .rating__input-3:hover ~ [data-rating="3"][hidden], .rating__input-4:hover ~ [data-rating="4"][hidden], .rating__input-5:hover ~ [data-rating="5"][hidden], .rating__input:checked:hover ~ [data-rating]:not([hidden]) {
display: block;
}
.rating__input-1:hover ~ .rating__label:first-of-type .rating__star-stroke, .rating__input-2:hover ~ .rating__label:nth-of-type(-n + 2) .rating__star-stroke, .rating__input-3:hover ~ .rating__label:nth-of-type(-n + 3) .rating__star-stroke, .rating__input-4:hover ~ .rating__label:nth-of-type(-n + 4) .rating__star-stroke, .rating__input-5:hover ~ .rating__label:nth-of-type(-n + 5) .rating__star-stroke {
stroke: var(--yellow);
transform: scale(1);
}
.rating__input-1:checked ~ .rating__label:first-of-type .rating__star-ring, .rating__input-2:checked ~ .rating__label:nth-of-type(-n + 2) .rating__star-ring, .rating__input-3:checked ~ .rating__label:nth-of-type(-n + 3) .rating__star-ring, .rating__input-4:checked ~ .rating__label:nth-of-type(-n + 4) .rating__star-ring, .rating__input-5:checked ~ .rating__label:nth-of-type(-n + 5) .rating__star-ring {
animation-name: starRing;
}
.rating__input-1:checked ~ .rating__label:first-of-type .rating__star-stroke, .rating__input-2:checked ~ .rating__label:nth-of-type(-n + 2) .rating__star-stroke, .rating__input-3:checked ~ .rating__label:nth-of-type(-n + 3) .rating__star-stroke, .rating__input-4:checked ~ .rating__label:nth-of-type(-n + 4) .rating__star-stroke, .rating__input-5:checked ~ .rating__label:nth-of-type(-n + 5) .rating__star-stroke {
animation-name: starStroke;
}
.rating__input-1:checked ~ .rating__label:first-of-type .rating__star-line, .rating__input-2:checked ~ .rating__label:nth-of-type(-n + 2) .rating__star-line, .rating__input-3:checked ~ .rating__label:nth-of-type(-n + 3) .rating__star-line, .rating__input-4:checked ~ .rating__label:nth-of-type(-n + 4) .rating__star-line, .rating__input-5:checked ~ .rating__label:nth-of-type(-n + 5) .rating__star-line {
animation-name: starLine;
}
.rating__input-1:checked ~ .rating__label:first-of-type .rating__star-fill, .rating__input-2:checked ~ .rating__label:nth-of-type(-n + 2) .rating__star-fill, .rating__input-3:checked ~ .rating__label:nth-of-type(-n + 3) .rating__star-fill, .rating__input-4:checked ~ .rating__label:nth-of-type(-n + 4) .rating__star-fill, .rating__input-5:checked ~ .rating__label:nth-of-type(-n + 5) .rating__star-fill {
animation-name: starFill;
}
.rating__input-1:not(:checked):hover ~ .rating__label:first-of-type .rating__star-fill, .rating__input-2:not(:checked):hover ~ .rating__label:nth-of-type(2) .rating__star-fill, .rating__input-3:not(:checked):hover ~ .rating__label:nth-of-type(3) .rating__star-fill, .rating__input-4:not(:checked):hover ~ .rating__label:nth-of-type(4) .rating__star-fill, .rating__input-5:not(:checked):hover ~ .rating__label:nth-of-type(5) .rating__star-fill {
fill: var(--yellow-t);
}
.rating__sr { clip: rect(1px, 1px, 1px, 1px); overflow: hidden; position: absolute; width: 1px; height: 1px;}
@media (prefers-color-scheme: dark) { :root { --bg: #17181c; --fg: #e3e4e8; }
.rating {
margin: auto;
}
.rating__star-stroke {
stroke: #454954;
}
}
@keyframes starRing { from, 20% { animation-timing-function: ease-in; opacity: 1; r: 8px; stroke-width: 16px; transform: scale(0); }
35% {
animation-timing-function: ease-out;
opacity: 0.5;
r: 8px;
stroke-width: 16px;
transform: scale(1);
}
50%, to {
opacity: 0;
r: 16px;
stroke-width: 0;
transform: scale(1);
}
}
@keyframes starFill {
from, 40% {
animation-timing-function: ease-out;
transform: scale(0);
}
60% {
animation-timing-function: ease-in-out;
transform: scale(1.2);
}
80% {
transform: scale(0.9);
}
to {
transform: scale(1);
}
}
@keyframes starStroke {
from {
transform: scale(1);
}
20%, to {
transform: scale(0);
}
}
@keyframes starLine {
from, 40% {
animation-timing-function: ease-out;
stroke-dasharray: 1 23;
stroke-dashoffset: 1;
}
60%, to {
stroke-dasharray: 12 12;
stroke-dashoffset: -12;
}
}##JavaScript
The JavaScript section initializes the star rating system, defining the various rating levels from “Terrible” to “Excellent” and handling the logic for updating the rating display based on user input. It animates the stars based on the selected rating and manages the display of corresponding text descriptions.
window.addEventListener("DOMContentLoaded",() => {
const starRating = new StarRating("form");
});
class StarRating {
constructor(qs) {
this.ratings = [
{id: 1, name: "Terrible"},
{id: 2, name: "Bad"},
{id: 3, name: "OK"},
{id: 4, name: "Good"},
{id: 5, name: "Excellent"}
];
this.rating = null;
this.el = document.querySelector(qs);
this.init();
}
init() {
this.el?.addEventListener("change",this.updateRating.bind(this));
// stop Firefox from preserving form data between refreshes
try {
this.el?.reset();
} catch (err) {
console.error("Element isn’t a form.");
}
}
updateRating(e) {
// clear animation delays
Array.from(this.el.querySelectorAll(`[for*="rating"]`)).forEach(el => {
el.className = "rating__label";
});
const ratingObject = this.ratings.find(r => r.id === +e.target.value);
const prevRatingID = this.rating?.id || 0;
let delay = 0;
this.rating = ratingObject;
this.ratings.forEach(rating => {
const { id } = rating;
// add the delays
const ratingLabel = this.el.querySelector(`[for="rating-${id}"]`);
if (id > prevRatingID + 1 && id <= this.rating.id) {
++delay;
ratingLabel.classList.add(`rating__label--delay${delay}`);
}
// hide ratings to not read, show the one to read
const ratingTextEl = this.el.querySelector(`[data-rating="${id}"]`);
if (this.rating.id !== id)
ratingTextEl.setAttribute("hidden",true);
else
ratingTextEl.removeAttribute("hidden");
});
}
}##Conclusion
Overall, the code integrates HTML, CSS, and JavaScript to create an interactive and visually appealing star rating system with dynamic animations. It allows users to select their desired rating and provides real-time visual feedback for their selection.
The entire code aims to provide a user-friendly and engaging way for users to interact with and provide feedback, suitable for various applications where user reviews or ratings are important. The custom animations and visual feedback enhance the user experience, making the rating system more intuitive and enjoyable to use.
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