网页动态背景——随鼠标变换的动态线条（鼠标蜘蛛网特效）
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网页动态背景——随鼠标变换的动态线条（鼠标蜘蛛网特效）
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網頁動態背景——隨鼠標變換的動態線條
效果圖如下
代碼如下：
<!DOCTYPE HTML> <html> <head> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <title>動態鼠標蜘蛛網特效</title> </head> <body> </body> <script type="text/javascript" src="https://cdn.bootcss.com/canvas-nest.js/1.0.1/canvas-nest.min.js"></script> <script> ! function() {function n(n, e, t) {return n.getAttribute(e) || t}function e(n) {return document.getElementsByTagName(n)}function t() {var t = e("script"),o = t.length,i = t[o - 1];return {l: o,z: n(i, "zIndex", -1),o: n(i, "opacity", .5),c: n(i, "color", "0,0,0"),n: n(i, "count", 99)}}function o() {a = m.width = window.innerWidth || document.documentElement.clientWidth || document.body.clientWidth,c = m.height = window.innerHeight || document.documentElement.clientHeight || document.body.clientHeight}function i() {r.clearRect(0, 0, a, c);var n, e, t, o, m, l;s.forEach(function(i, x) {for (i.x += i.xa, i.y += i.ya, i.xa *= i.x > a || i.x < 0 ? -1 : 1, i.ya *= i.y > c || i.y < 0 ? -1 : 1, r.fillRect(i.x - .5, i.y - .5, 1, 1), e = x + 1; e < u.length; e++) n = u[e],null !== n.x && null !== n.y && (o = i.x - n.x, m = i.y - n.y, l = o * o + m * m, l < n.max && (n === y && l >= n.max / 2 && (i.x -= .03 * o, i.y -= .03 * m), t = (n.max - l) / n.max, r.beginPath(), r.lineWidth = t / 2, r.strokeStyle = "rgba(" + d.c + "," + (t + .2) + ")", r.moveTo(i.x, i.y), r.lineTo(n.x, n.y), r.stroke()))}),x(i)}var a, c, u, m = document.createElement("canvas"),d = t(),l = "c_n" + d.l,r = m.getContext("2d"),x = window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame || window.oRequestAnimationFrame || window.msRequestAnimationFrame ||function(n) {window.setTimeout(n, 1e3 / 45)},w = Math.random,y = {x: null,y: null,max: 2e4};m.id = l,m.style.cssText = "position:fixed;top:0;left:0;z-index:" + d.z + ";opacity:" + d.o,e("body")[0].appendChild(m),o(),window.onresize = o,window.onmousemove = function(n) {n = n || window.event,y.x = n.clientX,y.y = n.clientY},window.onmouseout = function() {y.x = null,y.y = null};for (var s = [], f = 0; d.n > f; f++) {var h = w() * a,g = w() * c,v = 2 * w() - 1,p = 2 * w() - 1;s.push({x: h,y: g,xa: v,ya: p,max: 6e3})}u = s.concat([y]),setTimeout(function() {i()},100) } (); </script> </html>轉自:https://www.cnblogs.com/qq597585136/p/7019755.html
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