jQuery/js实现跟随鼠标移动的特效代码实例
文章来源：365jz.com 点击数：393 更新时间：2018-11-07 09:25 参与评论
js实现鼠标跟随效果
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title></title> <style> * { margin: 0; padding: 0 } img { position: absolute; top: 0; left: 0; } </style> </head> <body> <img src="001.jpg" alt="" width="50" height="50" id="pic"/> <script> var timer = null; var pic = document.getElementById("pic"); //在页面上 点击的时候 获取鼠标在页面上的位置 让图片 慢慢 到这个位置 document.onmousemove = function (event) { clearInterval(timer); var event = event || window.event; //获取鼠标在页面上的位置 var pageX = event.pageX || event.clientX + document.documentElement.scrollLeft; var pageY = event.pageY || event.clientY + document.documentElement.scrollTop; //让图片 慢慢 到这个位置 timer = setInterval(function () { //step = (target - leader) / 10 //leader = leader + step var targetX = pageX - pic.offsetWidth / 2;//水平方向的目标 var targetY = pageY - pic.offsetHeight / 2;// var leaderX = pic.offsetLeft;//水平方向的当前位置 var leaderY = pic.offsetTop;// var stepX = (targetX - leaderX) / 10; var stepY = (targetY - leaderY) / 10; stepX = stepX > 0 ? Math.ceil(stepX) : Math.floor(stepX); stepY = stepY > 0 ? Math.ceil(stepY) : Math.floor(stepY); leaderX = leaderX + stepX; leaderY = leaderY + stepY; pic.style.left = leaderX + "px";//单位一定不要忘记 pic.style.top = leaderY + "px";//单位一定不要忘记 if (leaderX === targetX && leaderY === targetY) { clearInterval(timer); } }, 1); }; </script> </body> </html>
jQuery实现div跟随鼠标移动的代码
<!DOCTYPE html> <html> <head> <meta charset="{utf-8}"> <title></title> <script src="http://libs.baidu.com/jquery/1.11.3/jquery.min.js"></script> <style> .aa{ height: 100px; width: 200px; position: absolute; background-color: green; } </style> </head> <body> <p class="aa"></p> </body> </html> <script> $(".aa").mousedown(function(e){ //设置移动后的默认位置 var endx=0; var endy=0; //获取p的初始位置，要注意的是需要转整型，因为获取到值带px var left= parseInt($(".aa").css("left")); var top = parseInt($(".aa").css("top")); //获取鼠标按下时的坐标，区别于下面的es.pageX,es.pageY var downx=e.pageX; var downy=e.pageY; //pageY的y要大写，必须大写！！ // 鼠标按下时给p挂事件 $(".aa").bind("mousemove",function(es){ //es.pageX,es.pageY:获取鼠标移动后的坐标 var endx= es.pageX-downx+left; //计算p的最终位置 var endy=es.pageY-downy+top; //带上单位 $(".aa").css("left",endx+"px").css("top",endy+"px") }); }) $(".aa").mouseup(function(){ //鼠标弹起时给p取消事件 $(".aa").unbind("mousemove") }) </script>
canvas跟随鼠标特效
<style> * { margin:0; padding:0; -webkit-box-sizing:border-box; -moz-box-sizing:border-box; -ms-box-sizing:border-box; -o-box-sizing:border-box; box-sizing:border-box; } html,body { margin:0; padding:0; font:16px/1.4 'Lato',sans-serif; color:#fefeff; -webkit-font-smoothing:antialiased; font-smoothing:antialiased; } body { background:rgb(8,5,16); -webkit-touch-callout:none; -webkit-user-select:none; -khtml-user-select:none; -moz-user-select:none; -ms-user-select:none; user-select:none; } h1 { font:2.75em 'Cinzel',serif; font-weight:400; letter-spacing:0.35em; text-shadow:0 0 25px rgba(254,254,255,0.85); } h2 { font:1.45em 'Cinzel',serif; font-weight:400; letter-spacing:0.5em; text-shadow:0 0 25px rgba(254,254,255,0.85); text-transform:lowercase; } [class^="letter"] { -webkit-transition:opacity 3s ease; -moz-transition:opacity 3s ease; transition:opacity 3s ease; } .letter-0 { transition-delay:0.2s; } .letter-1 { transition-delay:0.4s; } .letter-2 { transition-delay:0.6s; } .letter-3 { transition-delay:0.8s; } .letter-4 { transition-delay:1.0s; } .letter-5 { transition-delay:1.2s; } .letter-6 { transition-delay:1.4s; } .letter-7 { transition-delay:1.6s; } .letter-8 { transition-delay:1.8s; } .letter-9 { transition-delay:2.0s; } .letter-10 { transition-delay:2.2s; } .letter-11 { transition-delay:2.4s; } .letter-12 { transition-delay:2.6s; } .letter-13 { transition-delay:2.8s; } .letter-14 { transition-delay:3.0s; } h1,h2 { visibility:hidden; -webkit-transform:translate3d(0,0,0); -moz-transform:translate3d(0,0,0); transform:translate3d(0,0,0); } h1.transition-in,h2.transition-in { visibility:visible; } h1 [class^="letter"],h2 [class^="letter"] { opacity:0; } h1.transition-in [class^="letter"],h2.transition-in [class^="letter"] { opacity:1; } #container { display:table; position:absolute; z-index:20; width:100%; height:100%; text-align:center; cursor:none; } #container > div { display:table-cell; vertical-align:middle; } #container p { position:absolute; width:100%; left:0; bottom:25px; font-size:0.8em; letter-spacing:0.1em; font-weight:300; color:#76747a; -webkit-font-smoothing:subpixel-antialiased; font-smoothing:subpixel-antialiased; } #container p strong { color:#b3abc5; } #container p span { font-size:0.75em; padding:0 2px; } #canvas { position:absolute; z-index:10; top:0; left:0; width:100%; height:100%; cursor:none; } #stats { position:absolute; z-index:10; left:10px; top:10px; } .dg.ac { z-index:100 !important; } </style> <div id="container"> <div> <h1 id="h1"> 365建站！ </h1> <h2 id="h2">让建站和seo变得简单</h2> </div> </div> <canvas id="canvas"></canvas> <script src="http://libs.baidu.com/jquery/1.11.3/jquery.min.js"></script> <script> var Stats = function() { var e = Date.now(), t = e, i = 0, n = 1 / 0, r = 0, s = 0, o = 1 / 0, a = 0, l = 0, h = 0, c = document.createElement("div"); c.id = "stats", c.addEventListener("mousedown", function(e) { e.preventDefault(), v(++h % 2) }, !1), c.style.cssText = "width:80px;opacity:0.9;cursor:pointer"; var u = document.createElement("div"); u.id = "fps", u.style.cssText = "padding:0 0 3px 3px;text-align:left;background-color:#002", c.appendChild(u); var d = document.createElement("div"); d.id = "fpsText", d.style.cssText = "color:#0ff;font-family:Helvetica,Arial,sans-serif;font-size:9px;font-weight:bold;line-height:15px", d.innerHTML = "FPS", u.appendChild(d); var p = document.createElement("div"); for (p.id = "fpsGraph", p.style.cssText = "position:relative;width:74px;height:30px;background-color:#0ff", u.appendChild(p); 74 > p.children.length;) { var f = document.createElement("span"); f.style.cssText = "width:1px;height:30px;float:left;background-color:#113", p.appendChild(f) } var m = document.createElement("div"); m.id = "ms", m.style.cssText = "padding:0 0 3px 3px;text-align:left;background-color:#020;display:none", c.appendChild(m); var g = document.createElement("div"); g.id = "msText", g.style.cssText = "color:#0f0;font-family:Helvetica,Arial,sans-serif;font-size:9px;font-weight:bold;line-height:15px", g.innerHTML = "MS", m.appendChild(g); var y = document.createElement("div"); for (y.id = "msGraph", y.style.cssText = "position:relative;width:74px;height:30px;background-color:#0f0", m.appendChild(y); 74 > y.children.length;) { var f = document.createElement("span"); f.style.cssText = "width:1px;height:30px;float:left;background-color:#131", y.appendChild(f) } var v = function(e) { switch (h = e) { case 0: u.style.display = "block", m.style.display = "none"; break; case 1: u.style.display = "none", m.style.display = "block" } }, b = function(e, t) { var i = e.appendChild(e.firstChild); i.style.height = t + "px" }; return { REVISION: 11, domElement: c, setMode: v, begin: function() { e = Date.now() }, end: function() { var h = Date.now(); return i = h - e, n = Math.min(n, i), r = Math.max(r, i), g.textContent = i + " MS (" + n + "-" + r + ")", b(y, Math.min(30, 30 - 30 * (i / 200))), l++, h > t + 1e3 && (s = Math.round(1e3 * l / (h - t)), o = Math.min(o, s), a = Math.max(a, s), d.textContent = s + " FPS (" + o + "-" + a + ")", b(p, Math.min(30, 30 - 30 * (s / 100))), t = h, l = 0), h }, update: function() { e = this.end() } } }; ; (function(window) { var ctx, hue, logo, form, buffer, target = {}, tendrils = [], settings = {}; settings.debug = true; settings.friction = 0.5; settings.trails = 20; settings.size = 50; settings.dampening = 0.25; settings.tension = 0.98; Math.TWO_PI = Math.PI * 2; // ======================================================================================== // Oscillator // ---------------------------------------------------------------------------------------- function Oscillator(options) { this.init(options || {}); } Oscillator.prototype = (function() { var value = 0; return { init: function(options) { this.phase = options.phase || 0; this.offset = options.offset || 0; this.frequency = options.frequency || 0.001; this.amplitude = options.amplitude || 1; }, update: function() { this.phase += this.frequency; value = this.offset + Math.sin(this.phase) * this.amplitude; return value; }, value: function() { return value; } }; })(); // ======================================================================================== // Tendril // ---------------------------------------------------------------------------------------- function Tendril(options) { this.init(options || {}); } Tendril.prototype = (function() { function Node() { this.x = 0; this.y = 0; this.vy = 0; this.vx = 0; } return { init: function(options) { this.spring = options.spring + (Math.random() * 0.1) - 0.05; this.friction = settings.friction + (Math.random() * 0.01) - 0.005; this.nodes = []; for (var i = 0, node; i < settings.size; i++) { node = new Node(); node.x = target.x; node.y = target.y; this.nodes.push(node); } }, update: function() { var spring = this.spring, node = this.nodes[0]; node.vx += (target.x - node.x) * spring; node.vy += (target.y - node.y) * spring; for (var prev, i = 0, n = this.nodes.length; i < n; i++) { node = this.nodes[i]; if (i > 0) { prev = this.nodes[i - 1]; node.vx += (prev.x - node.x) * spring; node.vy += (prev.y - node.y) * spring; node.vx += prev.vx * settings.dampening; node.vy += prev.vy * settings.dampening; } node.vx *= this.friction; node.vy *= this.friction; node.x += node.vx; node.y += node.vy; spring *= settings.tension; } }, draw: function() { var x = this.nodes[0].x, y = this.nodes[0].y, a, b; ctx.beginPath(); ctx.moveTo(x, y); for (var i = 1, n = this.nodes.length - 2; i < n; i++) { a = this.nodes[i]; b = this.nodes[i + 1]; x = (a.x + b.x) * 0.5; y = (a.y + b.y) * 0.5; ctx.quadraticCurveTo(a.x, a.y, x, y); } a = this.nodes[i]; b = this.nodes[i + 1]; ctx.quadraticCurveTo(a.x, a.y, b.x, b.y); ctx.stroke(); ctx.closePath(); } }; })(); // ---------------------------------------------------------------------------------------- function init(event) { document.removeEventListener('mousemove', init); document.removeEventListener('touchstart', init); document.addEventListener('mousemove', mousemove); document.addEventListener('touchmove', mousemove); document.addEventListener('touchstart', touchstart); mousemove(event); reset(); loop(); } function reset() { tendrils = []; for (var i = 0; i < settings.trails; i++) { tendrils.push(new Tendril({ spring: 0.45 + 0.025 * (i / settings.trails) })); } } function loop() { if (!ctx.running) return; ctx.globalCompositeOperation = 'source-over'; ctx.fillStyle = 'rgba(8,5,16,0.4)'; ctx.fillRect(0, 0, ctx.canvas.width, ctx.canvas.height); ctx.globalCompositeOperation = 'lighter'; ctx.strokeStyle = 'hsla(' + Math.round(hue.update()) + ',90%,50%,0.25)'; ctx.lineWidth = 1; if (ctx.frame % 60 == 0) { console.log(hue.update(), Math.round(hue.update()), hue.phase, hue.offset, hue.frequency, hue.amplitude); } for (var i = 0, tendril; i < settings.trails; i++) { tendril = tendrils[i]; tendril.update(); tendril.draw(); } ctx.frame++; ctx.stats.update(); requestAnimFrame(loop); } function resize() { ctx.canvas.width = window.innerWidth; ctx.canvas.height = window.innerHeight; } function start() { if (!ctx.running) { ctx.running = true; loop(); } } function stop() { ctx.running = false; } function mousemove(event) { if (event.touches) { target.x = event.touches[0].pageX; target.y = event.touches[0].pageY; } else { target.x = event.clientX target.y = event.clientY; } event.preventDefault(); } function touchstart(event) { if (event.touches.length == 1) { target.x = event.touches[0].pageX; target.y = event.touches[0].pageY; } } function keyup(event) { switch (event.keyCode) { case 32: save(); break; default: // console.log(event.keyCode); } } function letters(id) { var el = document.getElementById(id), letters = el.innerHTML.replace('&', '&').split(''), heading = ''; for (var i = 0, n = letters.length, letter; i < n; i++) { letter = letters[i].replace('&', '&'); heading += letter.trim() ? '<span class="letter-' + i + '">' + letter + '</span>' : ' '; } el.innerHTML = heading; setTimeout(function() { el.className = 'transition-in'; }, (Math.random() * 500) + 500); } function save() { if (!buffer) { buffer = document.createElement('canvas'); buffer.width = screen.availWidth; buffer.height = screen.availHeight; buffer.ctx = buffer.getContext('2d'); form = document.createElement('form'); form.method = 'post'; form.input = document.createElement('input'); form.input.type = 'hidden'; form.input.name = 'data'; form.appendChild(form.input); document.body.appendChild(form); } buffer.ctx.fillStyle = 'rgba(8,5,16)'; buffer.ctx.fillRect(0, 0, buffer.width, buffer.height); buffer.ctx.drawImage(canvas, Math.round(buffer.width / 2 - canvas.width / 2), Math.round(buffer.height / 2 - canvas.height / 2) ); buffer.ctx.drawImage(logo, Math.round(buffer.width / 2 - logo.width / 4), Math.round(buffer.height / 2 - logo.height / 4), logo.width / 2, logo.height / 2 ); window.open(buffer.toDataURL(), 'wallpaper', 'top=0,left=0,width=' + buffer.width + ',height=' + buffer.height); // form.input.value = buffer.toDataURL().substr(22); // form.submit(); } window.requestAnimFrame = (function() { return window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame || function(fn) { window.setTimeout(fn, 1000 / 60) }; })(); window.onload = function() { ctx = document.getElementById('canvas').getContext('2d'); ctx.stats = new Stats(); ctx.running = true; ctx.frame = 1; logo = new Image(); logo.src = 'http://labs.nikrowell.com/lightsandmotion/ultraviolet/images/logo.png'; hue = new Oscillator({ phase: Math.random() * Math.TWO_PI, amplitude: 85, frequency: 0.0015, offset: 285 }); letters('h1'); letters('h2'); document.addEventListener('mousemove', init); document.addEventListener('touchstart', init); document.body.addEventListener('orientationchange', resize); window.addEventListener('resize', resize); window.addEventListener('keyup', keyup); window.addEventListener('focus', start); window.addEventListener('blur', stop); resize(); if (window.DEBUG) { var gui = new dat.GUI(); // gui.add(settings, 'debug'); settings.gui.add(settings, 'trails', 1, 30).onChange(reset); settings.gui.add(settings, 'size', 25, 75).onFinishChange(reset); settings.gui.add(settings, 'friction', 0.45, 0.55).onFinishChange(reset); settings.gui.add(settings, 'dampening', 0.01, 0.4).onFinishChange(reset); settings.gui.add(settings, 'tension', 0.95, 0.999).onFinishChange(reset); document.body.appendChild(ctx.stats.domElement); } }; })(window); </script>
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