https://www.prabhabonline.com/themes/prabhab-online/js/slidenav.js

1! function(a) { "use strict";
2
3    function b() { var a, b = document.createElement("fakeelement"),
4            c = { transition: "transitionend", OTransition: "oTransitionEnd", MozTransition: "transitionend", WebkitTransition: "webkitTransitionEnd" }; for (a in c)
5            if (void 0 !== b.style[a]) return c[a] }
6
7    function c(b) { var c = 0,
8            d = 0; if (!b) var b = a.event; return b.pageX || b.pageY ? (c = b.pageX, d = b.pageY) : (b.clientX || b.clientY) && (c = b.clientX + document.body.scrollLeft + document.documentElement.scrollLeft, d = b.clientY + document.body.scrollTop + document.documentElement.scrollTop), { x: c, y: d } }
9
10    function d(b) { var c = b.getBoundingClientRect(),
11            d = document.body,
12            e = document.documentElement,
13            f = a.pageYOffset || e.scrollTop || d.scrollTop,
14            g = a.pageXOffset || e.scrollLeft || d.scrollLeft,
15            h = e.clientTop || d.clientTop || 0,
16            i = e.clientLeft || d.clientLeft || 0,
17            j = c.top + f - h,
18            k = c.left + g - i; return { x: Math.round(k), y: Math.round(j) } }
19
20    function e() { this.body = document.body, this.wrapper = document.querySelector("#wrapper"), this.toggle = document.querySelector("#mm-menu-toggle"), this.menu = document.querySelector("#mm-menu"), this.menuItems = this.menu.querySelectorAll("li"), this.menuItemLinks = this.menu.querySelectorAll("a"), this.menuPosition = "off", this.mask = document.createElement("div"), this.mask.className = "mm-menu-mask", document.body.appendChild(this.mask), this._init() } var f = b();
21    e.prototype._init = function() { this._initToggleEvents(), this._initItemTransitions(), this._initTouchEffect(), this._initMaskEvents() }, e.prototype._initToggleEvents = function() { var a = this;
22        this.toggle.addEventListener("click", function() { "off" == a.menuPosition ? a._toggleMenuOn() : a._toggleMenuOff() }) }, e.prototype._toggleMenuOn = function() { var a = this;
23        this.body.classList.add("mm-menu-open"), this.wrapper.classList.add("mm-menu-open"), this.toggle.classList.add("active"), this.menu.classList.add("active"); for (var b = 0; b < a.menuItems.length; b++) { var c = a.menuItems[b];! function(a) { a.classList.add("in-view") }(c) }
24        this.mask.classList.add("active"), this.menuPosition = "on" }, e.prototype._toggleMenuOff = function() { var a = this;
25        this.body.classList.remove("mm-menu-open"), this.wrapper.classList.remove("mm-menu-open"), this.toggle.classList.remove("active"), this.menu.classList.remove("active"); for (var b = 0; b < a.menuItems.length; b++) { var c = a.menuItems[b];! function(a) { a.classList.remove("in-view") }(c) }
26        this.mask.classList.remove("active"), this.menuPosition = "off" }, e.prototype._initItemTransitions = function() { for (var a = this.menuItems.length, b = 0; a > b; b++) { var c = b + 1,
27                d = this.menuItems[b];
28            this._itemTransitionHandler(d, c) } }, e.prototype._itemTransitionHandler = function(a, b) { a.classList.add("item-" + b) }, e.prototype._initTouchEffect = function() { for (var a = this.menuItemLinks.length, b = 0; a > b; b++) { var c = this.menuItemLinks[b];
29            this._touchEffectHandler(c) } }, e.prototype._touchEffectHandler = function(a) { var b = a.offsetWidth,
30            e = a.offsetHeight,
31            g = 2 * Math.max(b, e),
32            h = document.createElement("span");
33        h.className = "mm-menu__link--touch-effect", h.style.width = g + "px", h.style.height = g + "px", a.insertBefore(h, a.firstChild), a.addEventListener("click", function(a) { var b = c(a).x - d(this).x,
34                e = c(a).y - d(this).y;
35            h.style.top = e + "px", h.style.left = b + "px", h.style.marginTop = -(g / 2) + "px", h.style.marginLeft = -(g / 2) + "px", h.classList.add("animating") }), h.addEventListener(f, function() { this.classList.remove("animating") }) }, e.prototype._initMaskEvents = function() { var a = this;
36        this.mask.addEventListener("click", function(b) { b.preventDefault(), "on" == a.menuPosition ? a._toggleMenuOff() : !1 }) }, a.Menu = e }(window);