js特效 长期更新(收集)

1. 移动鼠标线条跟随效果

! 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)
}();

2. 鼠标点击切换文字效果

var a_idx = 0;
jQuery(document).ready(function($) {
    $("body").click(function(e) {
        var a = new Array("?富强?","?民主?","?文明?","?和谐?","?自由?","?平等?","?公正?","?法治?","?爱国?","?敬业?","?诚信?","?友善?");
        var $i = $("<span></span>").text(a[a_idx]);
        a_idx = (a_idx + 1) % a.length;
        var x = e.pageX,
        y = e.pageY;
        $i.css({
            "z-index": 999999999999999999999999999999999999999999999999999999999999999999999,
            "top": y - 20,
            "left": x,
            "position": "absolute",
            "font-weight": "bold",
            "color": "rgb("+~~(255*Math.random())+","+~~(255*Math.random())+","+~~(255*Math.random())+")"
        });
        $("body").append($i);
        $i.animate({
            "top": y - 180,
            "opacity": 0
        },
        1500,
        function() {
            $i.remove();
        });
    });
});

原文地址：https://www.cnblogs.com/article-record/p/11378754.html