搜索到
2
篇
分类为 JS 的文章
-
HTML - 圆环时钟 一款好看的时间时钟html代码，加在网站侧边栏也是非常好看，强力推荐！！<html> <head> <style> * { border: 0; box-sizing: border-box; margin: 0; padding: 0; } :root { --hue: 223; --bg: hsl(var(--hue), 10%, 90%); --fg: hsl(var(--hue), 10%, 10%); font-size: calc(16px + (24 - 16) * (100vw - 320px) / (1280 - 320)); } body, button { color: #fff; font: 1em/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; } body { background-color: #1F1F1F; height: 100vh; display: grid; place-items: center; } .progress-clock { display: grid; justify-content: center; align-content: center; position: relative; text-align: center; width: 16em; height: 16em; } .progress-clock__time-date, .progress-clock__time-digit, .progress-clock__time-colon, .progress-clock__time-ampm { transition: color 0.2s linear; -webkit-user-select: none; -moz-user-select: none; user-select: none; } .progress-clock__time-date, .progress-clock__time-digit { background: transparent; } .progress-clock__time-date, .progress-clock__time-ampm { grid-column: 1 / 6; } .progress-clock__time-date { font-size: 0.75em; line-height: 1.33; } .progress-clock__time-digit, .progress-clock__time-colon { font-size: 2em; font-weight: 400; grid-row: 2; } .progress-clock__time-colon { line-height: 1.275; } .progress-clock__time-ampm { cursor: default; grid-row: 3; } .progress-clock__rings { display: block; position: absolute; top: 0; left: 0; width: 100%; height: 100%; z-index: -1; } .progress-clock__ring { opacity: 0.1; } .progress-clock__ring-fill { transition: opacity 0s 0.3s linear, stroke-dashoffset 0.3s ease-in-out; } .progress-clock__ring-fill--360 { opacity: 0; stroke-dashoffset: 0; transition-duration: 0.3s; } [data-group]:focus { outline: transparent; } [data-units] { transition: opacity 0.2s linear; } [data-group="d"]:focus, [data-group="d"]:hover { color: hsl(333, 90%, 55%); } [data-group="h"]:focus, [data-group="h"]:hover { color: hsl(33, 90%, 55%); } [data-group="m"]:focus, [data-group="m"]:hover { color: hsl(213, 90%, 55%); } [data-group="s"]:focus, [data-group="s"]:hover { color: hsl(273, 90%, 55%); } [data-group]:focus~.progress-clock__rings [data-units], [data-group]:hover~.progress-clock__rings [data-units] { opacity: 0.2; } [data-group="d"]:focus~.progress-clock__rings [data-units="d"], [data-group="d"]:hover~.progress-clock__rings [data-units="d"], [data-group="h"]:focus~.progress-clock__rings [data-units="h"], [data-group="h"]:hover~.progress-clock__rings [data-units="h"], [data-group="m"]:focus~.progress-clock__rings [data-units="m"], [data-group="m"]:hover~.progress-clock__rings [data-units="m"], [data-group="s"]:focus~.progress-clock__rings [data-units="s"], [data-group="s"]:hover~.progress-clock__rings [data-units="s"] { opacity: 1; } /* Dark theme */ @media (prefers-color-scheme: dark) { :root { --bg: hsl(var(--hue), 10%, 10%); --fg: hsl(var(--hue), 10%, 90%); } .progress-clock__ring { opacity: 0.2; } } </style> </head> <body> <div id="clock" class="progress-clock"> <button class="progress-clock__time-date" data-group="d" type="button"> <small data-unit="w">Sunday</small><br> <span data-unit="mo">January</span> <span data-unit="d">1</span> </button> <button class="progress-clock__time-digit" data-unit="h" data-group="h" type="button">12</button><span class="progress-clock__time-colon">:</span><button class="progress-clock__time-digit" data-unit="m" data-group="m" type="button">00</button><span class="progress-clock__time-colon">:</span><button class="progress-clock__time-digit" data-unit="s" data-group="s" type="button">00</button> <span class="progress-clock__time-ampm" data-unit="ap">AM</span> <svg class="progress-clock__rings" width="256" height="256" viewBox="0 0 256 256"> <defs> <linearGradient id="pc-red" x1="1" y1="0.5" x2="0" y2="0.5"> <stop offset="0%" stop-color="hsl(343,90%,55%)" /> <stop offset="100%" stop-color="hsl(323,90%,55%)" /> </linearGradient> <linearGradient id="pc-yellow" x1="1" y1="0.5" x2="0" y2="0.5"> <stop offset="0%" stop-color="hsl(43,90%,55%)" /> <stop offset="100%" stop-color="hsl(23,90%,55%)" /> </linearGradient> <linearGradient id="pc-blue" x1="1" y1="0.5" x2="0" y2="0.5"> <stop offset="0%" stop-color="hsl(223,90%,55%)" /> <stop offset="100%" stop-color="hsl(203,90%,55%)" /> </linearGradient> <linearGradient id="pc-purple" x1="1" y1="0.5" x2="0" y2="0.5"> <stop offset="0%" stop-color="hsl(283,90%,55%)" /> <stop offset="100%" stop-color="hsl(263,90%,55%)" /> </linearGradient> </defs> <!-- Days of Month --> <g data-units="d"> <circle class="progress-clock__ring" cx="128" cy="128" r="74" fill="none" opacity="0.1" stroke="url(#pc-red)" stroke-width="12" /> <circle class="progress-clock__ring-fill" data-ring="mo" cx="128" cy="128" r="74" fill="none" stroke="url(#pc-red)" stroke-width="12" stroke-dasharray="465 465" stroke-dashoffset="465" stroke-linecap="round" transform="rotate(-90,128,128)" /> </g> <!-- Hours of Day --> <g data-units="h"> <circle class="progress-clock__ring" cx="128" cy="128" r="90" fill="none" opacity="0.1" stroke="url(#pc-yellow)" stroke-width="12" /> <circle class="progress-clock__ring-fill" data-ring="d" cx="128" cy="128" r="90" fill="none" stroke="url(#pc-yellow)" stroke-width="12" stroke-dasharray="565.5 565.5" stroke-dashoffset="565.5" stroke-linecap="round" transform="rotate(-90,128,128)" /> </g> <!-- Minutes of Hour --> <g data-units="m"> <circle class="progress-clock__ring" cx="128" cy="128" r="106" fill="none" opacity="0.1" stroke="url(#pc-blue)" stroke-width="12" /> <circle class="progress-clock__ring-fill" data-ring="h" cx="128" cy="128" r="106" fill="none" stroke="url(#pc-blue)" stroke-width="12" stroke-dasharray="666 666" stroke-dashoffset="666" stroke-linecap="round" transform="rotate(-90,128,128)" /> </g> <!-- Seconds of Minute --> <g data-units="s"> <circle class="progress-clock__ring" cx="128" cy="128" r="122" fill="none" opacity="0.1" stroke="url(#pc-purple)" stroke-width="12" /> <circle class="progress-clock__ring-fill" data-ring="m" cx="128" cy="128" r="122" fill="none" stroke="url(#pc-purple)" stroke-width="12" stroke-dasharray="766.5 766.5" stroke-dashoffset="766.5" stroke-linecap="round" transform="rotate(-90,128,128)" /> </g> </svg> </div> </body> <script> window.addEventListener("DOMContentLoaded", () => { const clock = new ProgressClock("#clock"); }); class ProgressClock { constructor(qs) { this.el = document.querySelector(qs); this.time = 0; this.updateTimeout = null; this.ringTimeouts = []; this.update(); } getDayOfWeek(day) { switch (day) { case 1: return "Monday"; case 2: return "Tuesday"; case 3: return "Wednesday"; case 4: return "Thursday"; case 5: return "Friday"; case 6: return "Saturday"; default: return "Sunday"; } } getMonthInfo(mo, yr) { switch (mo) { case 1: return { name: "February", days: yr % 4 === 0 ? 29 : 28 }; case 2: return { name: "March", days: 31 }; case 3: return { name: "April", days: 30 }; case 4: return { name: "May", days: 31 }; case 5: return { name: "June", days: 30 }; case 6: return { name: "July", days: 31 }; case 7: return { name: "August", days: 31 }; case 8: return { name: "September", days: 30 }; case 9: return { name: "October", days: 31 }; case 10: return { name: "November", days: 30 }; case 11: return { name: "December", days: 31 }; default: return { name: "January", days: 31 }; } } update() { this.time = new Date(); if (this.el) { // date and time const dayOfWeek = this.time.getDay(); const year = this.time.getFullYear(); const month = this.time.getMonth(); const day = this.time.getDate(); const hr = this.time.getHours(); const min = this.time.getMinutes(); const sec = this.time.getSeconds(); const dayOfWeekName = this.getDayOfWeek(dayOfWeek); const monthInfo = this.getMonthInfo(month, year); const m_progress = sec / 60; const h_progress = (min + m_progress) / 60; const d_progress = (hr + h_progress) / 24; const mo_progress = ((day - 1) + d_progress) / monthInfo.days; const units = [{ label: "w", value: dayOfWeekName }, { label: "mo", value: monthInfo.name, progress: mo_progress }, { label: "d", value: day, progress: d_progress }, { label: "h", value: hr > 12 ? hr - 12 : hr, progress: h_progress }, { label: "m", value: min < 10 ? "0" + min : min, progress: m_progress }, { label: "s", value: sec < 10 ? "0" + sec : sec }, { label: "ap", value: hr > 12 ? "PM" : "AM" } ]; // flush out the timeouts this.ringTimeouts.forEach(t => { clearTimeout(t); }); this.ringTimeouts = []; // update the display units.forEach(u => { // rings const ring = this.el.querySelector(`[data-ring="${u.label}"]`); if (ring) { const strokeDashArray = ring.getAttribute("stroke-dasharray"); const fill360 = "progress-clock__ring-fill--360"; if (strokeDashArray) { // calculate the stroke const circumference = +strokeDashArray.split(" ")[0]; const strokeDashOffsetPct = 1 - u.progress; ring.setAttribute( "stroke-dashoffset", strokeDashOffsetPct * circumference ); // add the fade-out transition, then remove it if (strokeDashOffsetPct === 1) { ring.classList.add(fill360); this.ringTimeouts.push( setTimeout(() => { ring.classList.remove(fill360); }, 600) ); } } } // digits const unit = this.el.querySelector(`[data-unit="${u.label}"]`); if (unit) unit.innerText = u.value; }); } clearTimeout(this.updateTimeout); this.updateTimeout = setTimeout(this.update.bind(this), 1e3); } } </script> </html> -
Js 音频律动 这段时间在独立写音乐项目，在学习过程中接触到了JS的音频律动，于是找到了以下项目以上是效果图下面分享代码：HTML结构<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Document</title> <link rel="stylesheet" href="index.css"> </head> <body style="background-color: #000;"> <div class="music-box"> <canvas class="my-canvas"></canvas> <button class="my-music-btn rotate"></button> </div> <script src="index.js"></script> </body> </html>CSS样式* { margin: 0; padding: 0; } body { height: 100vh; display: flex; justify-content: center; align-items: center; overflow: hidden; background: url(./test.jpg) center; background-size: cover; backdrop-filter: blur(50px) grayscale(50%); } .music-box { position: relative; width: 400px; height: 400px; display: flex; justify-content: center; align-items: center; } .my-canvas { position: absolute; top: 0; } .my-music-btn { position: relative; width: 250px; height: 250px; background: url(./test.jpg); background-size: cover; border-radius: 50%; border: none; outline: none; animation: music-btn-anim 20s infinite linear; } .my-music-btn.rotate { animation-play-state: paused; } @keyframes music-btn-anim { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }JS{tabs}{tabs-pane label="代码部分"}// 音乐播放器 class MusicPlayer { constructor(data = { musicSrc: "./test.mp3", // musicImgSrc: "./music.jpg", effectColor: "#FFFFFF" }) { this._requestID = null; // 特效单体 this._effectEntity = new Entity(); this._effectEntity.addComp(new MusicBtnSingleComp({ callback: () => { this._effectEntity.getComp("MusicBtnSingleComp").isRotate = !this._effectEntity.getComp("MusicBtnSingleComp").isRotate; !this._effectEntity.getComp("MusicSingleComp").isReady &&(this._effectEntity.getComp("MusicSingleComp").isReady = true); this._effectEntity.getComp("MusicSingleComp").isPlay = !this._effectEntity.getComp("MusicSingleComp").isPlay; if(!this._effectEntity.getComp("MusicSingleComp").isPlay) { cancelAnimationFrame(this._requestID); } else { this._requestID = requestAnimationFrame(this._renderFrame.bind(this)); } } })); this._effectEntity.addComp(new MusicSingleComp({ musicSrc: data.musicSrc })); this._effectEntity.addComp(new MusicEffectSingleComp({ effectColor: data.effectColor })) } _renderFrame() { this._requestID = requestAnimationFrame(this._renderFrame.bind(this)); this._effectEntity.getComp("MusicEffectSingleComp").byteFrequencyDate = this._effectEntity.getComp("MusicSingleComp").byteFrequencyDate; } } // 单体 class Entity { constructor() { this._compMap = new Map(); } addComp(comp) { this._compMap.set(comp.name, comp); } getComp(compName) { return this._compMap.get(compName); } } // 音乐按钮 class MusicBtnSingleComp { constructor(data) { this.name = "MusicBtnSingleComp"; this._isRotate = false; this._musicBtnDom = document.querySelector(".my-music-btn"); this._musicBtnDom.addEventListener("click", data.callback); } set isRotate(value) { if (value) { this._musicBtnDom.classList.remove("rotate"); } else { this._musicBtnDom.classList.add("rotate"); } this._isRotate = value; } get isRotate() { return this._isRotate; } } // 音乐 class MusicSingleComp { constructor(data) { this.name = "MusicSingleComp"; this._fftSize = 512; this._myAudioDom = document.createElement("audio"); this._myAudioDom.src = data.musicSrc; this._myAudioDom.loop = true; this._isReady = false; this._isPlay = false; this._analyser = null; this._dataArray = []; } set isReady(value) { if (value) { const ctx = new window.AudioContext(); this._analyser = ctx.createAnalyser(); this._analyser.fftSize = this._fftSize; const source = ctx.createMediaElementSource(this._myAudioDom); source.connect(this._analyser); this._analyser.connect(ctx.destination); const bufferLength = this._analyser.frequencyBinCount; this._dataArray = new Uint8Array(bufferLength); } this._isReady = value; } get isReady() { return this._isReady; } set isPlay(value) { if (value) { this._myAudioDom.play(); } else { this._myAudioDom.pause(); } this._isPlay = value; } get isPlay() { return this._isPlay; } get byteFrequencyDate() { this._analyser.getByteFrequencyData(this._dataArray); return this._dataArray.slice(0, 120); } } // 音乐特效 class MusicEffectSingleComp { constructor(data) { this.name = "MusicEffectSingleComp"; this._effectColor = data.effectColor; this._canvasDom = document.querySelector(".my-canvas"); this._canvasDom.width = 400; this._canvasDom.height = 400; this._ctx = this._canvasDom.getContext("2d"); this._byteFrequencyData; this._randomData = Uint8Array.from(new Uint8Array(120), (v,k) => k); this._randomData.sort(() => Math.random() - 0.5); this.byteFrequencyDate = new Uint8Array(120).fill(0); } set byteFrequencyDate(value) { this._byteFrequencyData = value; const bData = []; this._randomData.forEach(value => { bData.push(this._byteFrequencyData[value]); }) const angle = Math.PI * 2 / bData.length; this._ctx.clearRect(0, 0, this._canvasDom.width, this._canvasDom.height); this._ctx.fillStyle = this._effectColor; this._ctx.save(); this._ctx.translate(this._canvasDom.width / 2, this._canvasDom.height / 2); bData.forEach((value, index) => { this._ctx.save(); this._ctx.rotate(angle * index); this._ctx.beginPath(); const h = value / 256 * 60; this._ctx.roundRect(-4, 140, 4, (h < 4) ? 4 : h, 4); // 若上行的 roundRect 存在兼容性问题可以更换为下面注释的代码 // this._ctx.fillRect(-4, 140, 4, (h < 4) ? 4 : h); this._ctx.fill(); this._ctx.restore(); }); this._ctx.restore(); } } new MusicPlayer();{/tabs-pane}{tabs-pane label="代码解释"} 这是一个使用 JavaScript 原生 API 实现的音乐播放器，包含音乐按钮、音乐、音乐特效三个部分。其中：MusicPlayer：音乐播放器类，通过构造函数创建音乐播放器实例，同时包含特效单体（EffectEntity）。Entity：单体类，通过 addComp 和 getComp 方法向特效单体中添加和获取组件。MusicBtnSingleComp：音乐按钮组件，包含事件监听、旋转特效等。MusicSingleComp：音乐组件，负责音乐的加载、配置播放参数和获取音频频谱数据。MusicEffectSingleComp：音乐特效组件，通过获取音频频谱数据，实现了可视化的音乐特效。其中 MusicEffectSingleComp 中的 _ctx.roundRect 方法，可能是用户自定义的实现；如果有兼容性问题，可以更换到代码注释处的相应代码。{/tabs-pane}{/tabs}使用时仅需将图片和音频放于项目根目录并重命名为test.jpg 和 test.mp3即可
