AndreasB.

Either the polyfil doesn't work, or the extension doesn't. Is @NotHereToPlayGames stille here?

Open the link: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/findLastIndex and then click "Run." The field should then display "3" as the output.

Does my script work for you for findLastIndex?

I found the following page to test: https://developer.mozilla.org/de/docs/Web/JavaScript/Reference/Global_Objects/Array/findLastIndex I have the following code for this, but it doesn't work: // ==UserScript== // @name Inject findLastIndex // @version 0.0.1 // @description try to take over the world! // @match *://*/* // @run-at document-start // @grant none // ==/UserScript== if (!Array.prototype.findLastIndex) { 'use strict'; Object.defineProperty(Array.prototype, "findLastIndex", { value: function (predicate, thisArg) { let idx = this.length - 1; while (idx >= 0) { const value = this[idx]; if (predicate.call(thisArg, value, idx, this)) { return idx; } idx--; } return -1; } , writable: true, enumerable: false, configurable: true }); } What am I doing wrong?

I once read a description somewhere about how to integrate polyfills with Tampermonkey, and there was also a link to a page that listed various polyfills. Unfortunately, I can't find it anymore. I've installed Tampermonkey, but the polyfills I entered don't work. Does anyone have a description of how to do this correctly and a link to the polyfills? I'd like to continue using the "old" version of 360Chrome because it requires very little memory. Unfortunately, more and more websites are experiencing problems, which I hope to solve with polyfills.

I have install Tab-Mix-Plus and now all is working. For PaleMoon I have installed the German language pack. But is there another browser with German language pack for Windows XP?

Hello, I have install NM28XP V28.7.0a1 (32-bit) and have a problem. I have activate browser.showQuitWarning: true in about:config, but it don't inform at close. Can you fix this? And second: Can you add "tab duplicat" in the Tab-Contex-Menu? Do you have a other Browser with a german language-pack for WinXP x86? Greetings Andreas