油猴脚本-把灰色网页变回彩色

setgrayscale.js

// ==UserScript==
// @name         setgrayscale
// @version      0.1
// @description  x
// @author       wkgcass
// @match        *://*/*
// ==/UserScript==

(function() {
    'use strict';

    var exceptions = [
        "message.bilibili.com",
        "message.acfun.cn",
    ];
    var url = window.location.href;
    for (var e of exceptions) {
        if (url.indexOf(e) != -1) {
            return;
        }
    }

    function setGrayScale(node, scale) {
        if (!node) return;
        var style = node.getAttribute("style");
        if (style) {
            style += "; "
        } else {
            style = ""
        }
        style += "filter: grayscale(" + scale + ") !important;";
        node.setAttribute("style", style);

        // special handling:

        // for baidu
        (function() {
            var cls = node.getAttribute("class");
            if (!cls) return;
            var idx = cls.indexOf("big-event-gray");
            if (idx == -1) return;
            var newcls = cls.substring(0, idx);
            newcls += cls.substring(idx + "big-event-gray".length);
            node.setAttribute("class", newcls);
        })();
    }

    var html = document.documentElement;
    setGrayScale(html, 0.0);
    var body = document.body;
    setGrayScale(body, 0.0);

    // special handling:

    // for weibo
    (function() {
        var nodes = document.getElementsByClassName("grayTheme");
        for (var node of nodes) {
            setGrayScale(node, 0.0);
        }
    })();
})();