Inject javascript into almost every website you visit.
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// ==UserScript==
// @name InjectJS
// @namespace http://tampermonkey.net/
// @version 1.15
// @description Inject javascript into almost every website you visit.
// @author YTXaos
// @match *://*/*
// @icon https://raw.githubusercontent.com/YTXaos/InjectJS/main/assets/logo.png
// @grant GM_addElement
// @license MIT
// @require https://code.jquery.com/jquery-3.6.0.min.js
// ==/UserScript==
(function() {
"use strict";
const url = location.href, origin = location.origin;
function onURL(page) {
return url === `${origin}${page}`;
}
if(onURL("/inject-js/")) {
location = "https://github.com/YTXaos/InjectJS";
}
console.info("InjectJS Loaded. Press Ctrl + Q to topen");
const popup = document.createElement("div"), style = document.createElement("style");
fetch("https://raw.githubusercontent.com/YTXaos/InjectJS/main/assets/main.css").then(get => get.text()).then(set => style.innerHTML = set);
popup.setAttribute("class", "js-injector-popup");
popup.setAttribute("style", "display: none;");
popup.innerHTML = `
<label class="js-inject-header">
<div class="js-logo-needle">.....</div>
Inject<span class="js-logo">JS</span></label>
<textarea placeholder="Your code here" class="js-code-inject" spellcheck="off" data-gramm="false" data-gramm_editor="false" data-enable-grammarly="false"></textarea>
<button class="execute-code" disabled>Execute</button>`;
document.head.prepend(style);
document.body.prepend(popup);
function OptionsPage() {
$("link[rel=stylesheet], style").remove();
document.title = "InjectJS Options";
fetch("https://raw.githubusercontent.com/YTXaos/InjectJS/main/pages/options.html").then(get => get.text()).then(set => document.body.innerHTML = set);
fetch("https://raw.githubusercontent.com/YTXaos/InjectJS/main/options.js").then(get => get.text()).then(set => GM_addElement(document.body, "script", { textContent: set }));
}
const code = document.querySelector(".js-code-inject"), btn = document.querySelector(".execute-code");
code.addEventListener("input", CheckCode);
btn.addEventListener("click", InjectCode);
function CheckCode() {
const code = document.querySelector(".js-code-inject");
if(code.value.length < 5) {
btn.setAttribute("disabled", "disabled");
} else {
btn.removeAttribute("disabled");
}
}
function InjectCode() {
const code = document.querySelector(".js-code-inject").value;
const show_alerts = false;
try {
eval(code);
} catch(e) {
if(show_alerts) {
alert(e.message);
} else {
console.error(e.message);
}
}
}
function ShowInjector(event) {
dragElement(document.querySelector(".js-injector-popup"));
function dragElement(elmnt) {
var pos1 = 0, pos2 = 0, pos3 = 0, pos4 = 0;
if (document.querySelector(".js-inject-header")) {
document.querySelector(".js-inject-header").onmousedown = dragMouseDown;
} else {
elmnt.onmousedown = dragMouseDown;
}
function dragMouseDown(e) {
e = e || window.event;
e.preventDefault();
pos3 = e.clientX;
pos4 = e.clientY;
document.onmouseup = closeDragElement;
document.onmousemove = elementDrag;
}
function elementDrag(e) {
e = e || window.event;
e.preventDefault();
pos1 = pos3 - e.clientX;
pos2 = pos4 - e.clientY;
pos3 = e.clientX;
pos4 = e.clientY;
elmnt.style.top = (elmnt.offsetTop - pos2) + "px";
elmnt.style.left = (elmnt.offsetLeft - pos1) + "px";
}
function closeDragElement() {
document.onmouseup = null;
document.onmousemove = null;
}
}
popup.classList.toggle("show");
}
if(onURL("/inject-js/options")) {
OptionsPage();
}
document.addEventListener("keyup", function(e) {
e.preventDefault();
if(e.ctrlKey && e.which === 81) {
ShowInjector();
}
});
})();