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：438 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>如对本文有疑问，请提交到交流论坛，广大热心网友会为你解答！！ 点击进入论坛
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