ASP.Net <button> actions cause page reload

    new MutationObserver(async r => {
        let e = !1;
        if (!cf) {
            cf = new MutationObserver(async () => await pf(!0));
            for (let t of document.querySelectorAll(`style[type="${uf}"]`))
                Pv(t)
        }
        for (let t of r)
            for (let i of t.addedNodes)
                i.nodeType === 1 && i.tagName === "STYLE" && i.getAttribute("type") === uf && (Pv(i),
                e = !0);
        await pf(e)
    }

n.event = {
        global: {},
        add: function(a, b, c, d, e) {
            var f, g, h, i, j, k, l, m, o, p, q, r = N.get(a);
            if (r) {
                c.handler && (f = c,
                c = f.handler,
                e = f.selector),
                c.guid || (c.guid = n.guid++),
                (i = r.events) || (i = r.events = {}),
                (g = r.handle) || (g = r.handle = function(b) {
                    return "undefined" != typeof n && n.event.triggered !== b.type ? n.event.dispatch.apply(a, arguments) : void 0
                }
                ),