Bing TopScroll Blocker

防止Bing自动滚动到顶部.
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// ==UserScript==
// @name         Bing TopScroll Blocker
// @namespace    https://greasyfork.org/zh-CN/users/1327614-fakerjms
// @version      1.0.2
// @description  防止Bing自动滚动到顶部.
// @author       FakerJMS
// @match        http*://*.bing.com/*
// @icon         https://www.bing.com/sa/simg/favicon-trans-bg-blue-mg.ico
// @grant        none
// @license      MIT
// ==/UserScript==

(function() {
    'use strict';

    //
    let fk_origin_scrollTo = window.scrollTo;
    //
    let fk_fake_scrollTo = function(x, y) {
        console.log('fake scrollTo!');
    };

    // 禁用"滚动到顶部"
    function disable_scrollToTop() {
        window.scrollTo = fk_fake_scrollTo;
    }

    // 使能"滚动到顶部"
    function enable_scrollToTop() {
        window.scrollTo = fk_origin_scrollTo;
    }

    // 监听"窗口获取焦点"事件, 使能"滚动到顶部"
    window.addEventListener('focus', () => {
        console.log('窗口获取焦点');
        enable_scrollToTop();
    });
    // 监听"窗口失去焦点"事件, 禁用"滚动到顶部"
    window.addEventListener('blur', () => {
        console.log('窗口失去焦点');
        disable_scrollToTop();
    });
    // 监听"鼠标进入窗口"事件, 使能"滚动到顶部"
    document.addEventListener('mouseenter', () => {
        console.log('鼠标进入文档区域');
        enable_scrollToTop();
    });
    // 监听"鼠标离开窗口"事件, 禁用"滚动到顶部"
    document.addEventListener('mouseleave', () => {
        console.log('鼠标离开文档区域');
        disable_scrollToTop();
    });
})();