评论、搜索框打字粒子特效

这是一个评论、搜索框打字粒子特效，适合许多博客网站，可以去测试一下吧

使用方法

子比主题设置——全局& 功能——自定义代码——自定义 javascript 代码

其实所有 WP 站点都可以用，直接复制就行，如果用在其他主题或者其他位置，记得加<script> 标签

代码展示

<!--彩色粒子特效-->
(function webpackUniversalModuleDefinition(a, b) {
    if (typeof exports === "object" && typeof module === "object") {
        module.exports = b()
    } else {
        if (typeof define === "function" && define.amd) {
            define([], b)
        } else {
            if (typeof exports === "object") {
                exports["POWERMODE"] = b()
            } else {
                a["POWERMODE"] = b()
            }
        }
    }
})(this, function() {
    return (function(a) {
        var b = {};
 
        function c(e) {
            if (b[e]) {
                return b[e].exports
            }
            var d = b[e] = {
                exports: {},
                id: e,
                loaded: false
            };
            a[e].call(d.exports, d, d.exports, c);
            d.loaded = true;
            return d.exports
        }
        c.m = a;
        c.c = b;
        c.p = "";
        return c(0)
    })([function(c, g, b) {
        var d = document.createElement("canvas");
        d.width = window.innerWidth;
        d.height = window.innerHeight;
        d.style.cssText = "position:fixed;top:0;left:0;pointer-events:none;z-index:999999";
        window.addEventListener("resize", function() {
            d.width = window.innerWidth;
            d.height = window.innerHeight
        });
        document.body.appendChild(d);
        var a = d.getContext("2d");
        var n = [];
        var j = 0;
        var k = 120;
        var f = k;
        var p = false;
        o.shake = true;
 
        function l(r, q) {
            return Math.random() * (q - r) + r
        }
        function m(r) {
            if (o.colorful) {
                var q = l(0, 360);
                return "hsla(" + l(q - 10, q + 10) + ", 100%, " + l(50, 80) + "%, " + 1 + ")"
            } else {
                return window.getComputedStyle(r).color
            }
        }
        function e() {
            var t = document.activeElement;
            var v;
            if (t.tagName === "TEXTAREA" || (t.tagName === "INPUT" && t.getAttribute("type") === "text")) {
                var u = b(1)(t, t.selectionStart);
                v = t.getBoundingClientRect();
                return {
                    x: u.left + v.left,
                    y: u.top + v.top,
                    color: m(t)
                }
            }
            var s = window.getSelection();
            if (s.rangeCount) {
                var q = s.getRangeAt(0);
                var r = q.startContainer;
                if (r.nodeType === document.TEXT_NODE) {
                    r = r.parentNode
                }
                v = q.getBoundingClientRect();
                return {
                    x: v.left,
                    y: v.top,
                    color: m(r)
                }
            }
            return {
                x: 0,
                y: 0,
                color: "transparent"
            }
        }
        function h(q, s, r) {
            return {
                x: q,
                y: s,
                alpha: 1,
                color: r,
                velocity: {
                    x: -1 + Math.random() * 2,
                    y: -3.5 + Math.random() * 2
                }
            }
        }
        function o() {
            var t = e();
            var s = 5 + Math.round(Math.random() * 10);
            while (s--) {
                n[j] = h(t.x, t.y, t.color);
                j = (j + 1) % 500
            }
            f = k;
            if (!p) {
                requestAnimationFrame(i)
            }
            if (o.shake) {
                var r = 1 + 2 * Math.random();
                var q = r * (Math.random() > 0.5 ? -1 : 1);
                var u = r * (Math.random() > 0.5 ? -1 : 1);
                document.body.style.marginLeft = q + "px";
                document.body.style.marginTop = u + "px";
                setTimeout(function() {
                    document.body.style.marginLeft = "";
                    document.body.style.marginTop = ""
                }, 75)
            }
        }
        o.colorful = false;
 
        function i() {
            if (f > 0) {
                requestAnimationFrame(i);
                f--;
                p = true
            } else {
                p = false
            }
            a.clearRect(0, 0, d.width, d.height);
            for (var q = 0; q < n.length; ++q) {
                var r = n[q];
                if (r.alpha <= 0.1) {
                    continue
                }
                r.velocity.y += 0.075;
                r.x += r.velocity.x;
                r.y += r.velocity.y;
                r.alpha *= 0.96;
                a.globalAlpha = r.alpha;
                a.fillStyle = r.color;
                a.fillRect(Math.round(r.x - 1.5), Math.round(r.y - 1.5), 3, 3)
            }
        }
        requestAnimationFrame(i);
        c.exports = o
    }, function(b, a) {
        (function() {
            var d = ["direction", "boxSizing", "width", "height", "overflowX", "overflowY", "borderTopWidth", "borderRightWidth", "borderBottomWidth", "borderLeftWidth", "borderStyle", "paddingTop", "paddingRight", "paddingBottom", "paddingLeft", "fontStyle", "fontVariant", "fontWeight", "fontStretch", "fontSize", "fontSizeAdjust", "lineHeight", "fontFamily", "textAlign", "textTransform", "textIndent", "textDecoration", "letterSpacing", "wordSpacing", "tabSize", "MozTabSize"];
            var e = window.mozInnerScreenX != null;
 
            function c(k, l, o) {
                var h = o && o.debug || false;
                if (h) {
                    var i = document.querySelector("#input-textarea-caret-position-mirror-div");
                    if (i) {
                        i.parentNode.removeChild(i)
                    }
                }
                var f = document.createElement("div");
                f.id = "input-textarea-caret-position-mirror-div";
                document.body.appendChild(f);
                var g = f.style;
                var j = window.getComputedStyle ? getComputedStyle(k) : k.currentStyle;
                g.whiteSpace = "pre-wrap";
                if (k.nodeName !== "INPUT") {
                    g.wordWrap = "break-word"
                }
                g.position = "absolute";
                if (!h) {
                    g.visibility = "hidden"
                }
                d.forEach(function(p) {
                    g[p] = j[p]
                });
                if (e) {
                    if (k.scrollHeight > parseInt(j.height)) {
                        g.overflowY = "scroll"
                    }
                } else {
                    g.overflow = "hidden"
                }
                f.textContent = k.value.substring(0, l);
                if (k.nodeName === "INPUT") {
                    f.textContent = f.textContent.replace(/\s/g, "\u00a0")
                }
                var n = document.createElement("span");
                n.textContent = k.value.substring(l) || ".";
                f.appendChild(n);
                var m = {
                    top: n.offsetTop + parseInt(j["borderTopWidth"]),
                    left: n.offsetLeft + parseInt(j["borderLeftWidth"])
                };
                if (h) {
                    n.style.backgroundColor = "#aaa"
                } else {
                    document.body.removeChild(f)
                }
                return m
            }
            if (typeof b != "undefined" && typeof b.exports != "undefined") {
                b.exports = c
            } else {
                window.getCaretCoordinates = c
            }
        }())
    }])
});
POWERMODE.colorful = true;
POWERMODE.shake = false;
document.body.addEventListener("input", POWERMODE);
<!--彩色粒子特效结束-->