有趣的js(鼠标特效) 
<!DOCTYPE html>
<html>
    <head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
     <title>Document</title>
     </head>
 <body>

     <script type="text/javascript">
         !function() {
            function o(w, v, i) {
                return w.getAttribute(v) || i
            }
            function j(i) {
                return document.getElementsByTagName(i)
            }
            function l() {
                var i = j("script"),
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                v = i[w - 1];
                return {
                    l: w,
                    z: o(v, "zIndex", -1),
                    o: o(v, "opacity", 0.5),
                    c: o(v, "color", "0,0,0"),
                    n: o(v, "count", 99)
                }
            }
            function k() {
                r = u.width = window.innerWidth || document.documentElement.clientWidth || document.body.clientWidth,
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            function b() {
                e.clearRect(0, 0, r, n);
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                var x, v, A, B, z, y;
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                    i.x += i.xa,
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                    i.xa *= i.x > r || i.x < 0 ? -1 : 1,
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                            y = B * B + z * z;
                            y < x.max && (x === f && y >= x.max / 2 && (i.x -= 0.03 * B, i.y -= 0.03 * z), A = (x.max - y) / x.max, e.beginPath(), e.lineWidth = A / 2, e.strokeStyle = "rgba(" + s.c + "," + (A + 0.2) + ")", e.moveTo(i.x, i.y), e.lineTo(x.x, x.y), e.stroke())
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            e = u.getContext("2d"),
            r,
            n,
            m = window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame || window.oRequestAnimationFrame || window.msRequestAnimationFrame ||
            function(i) {
                window.setTimeout(i, 1000 / 45)
            },
            a = Math.random,
            f = {
                x: null,
                y: null,
                max: 20000
            };
            u.id = c;
            u.style.cssText = "position:fixed;top:0;left:0;z-index:" + s.z + ";opacity:" + s.o;
            j("body")[0].appendChild(u);
            k(),
            window.onresize = k;
            window.onmousemove = function(i) {
                i = i || window.event,
                f.x = i.clientX,
                f.y = i.clientY
            },
            window.onmouseout = function() {
                f.x = null,
                f.y = null
            };
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                    x: h,
                    y: g,
                    xa: q,
                    ya: d,
                    max: 6000
                })
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            setTimeout(function() {
                b()
            }, 100)
    } ();


     </script>
  
 </body>
</html>

 posted on 2018-07-05 15:09  布诺  阅读(358)  评论(0)  编辑  收藏  举报