scroll into changed flags on Chrome/mium for Devtools Console

chrome-flags-next-to.js

// @name        next +flag
// @namespace   http://noromanba.flavors.me
// @description scroll into changed flags on Chrome/mium for Devtools Console
// @include     chrome://flags/*
// @version     2017.4.25.1
// @homepage    https://gist.github.com/noromanba/e5020682a9dc6ade06a019615425c7cd
// @license     MIT License https://nrm.mit-license.org/2017
// @author      noromanba   http://noromanba.flavors.me


// view all changed flags below, see "Command Line" section
// chrome://version/

(() => {
    'use strict';

    Array.from(document.body.querySelectorAll([
        '.experiment-switched'
    ])).some(switched => {
         const feature = new URL(switched.querySelector([
            'a[href].permalink'
        ]).href).hash;

        // http://let.hatelabo.jp/noromanba/let/hLHWrt-tvNtK
        // current scrolling values
        //    window.scrollY
        //    window.pageYOffset
        //    document.documentElement.scrollTop
        //    document.body.scrollTop
        const absPos = Math.trunc(switched.getBoundingClientRect().top
                + document.body.scrollTop);

        if (location.hash === feature ||
            absPos <= document.body.scrollTop) {
            return;
        }

        location.hash = feature;
        return true;

        // TBD back to #top when scroll to last/bottom
    });
})();