Developer Console(Toggle with Ctrl+Q)

A draggable, resizable console panel with a Run button for executing JS on any page; toggled with Ctrl+Q

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name         Developer Console(Toggle with Ctrl+Q)
// @namespace    http://tampermonkey.net/
// @version      3.3
// @description  A draggable, resizable console panel with a Run button for executing JS on any page; toggled with Ctrl+Q
// @match        *://*/*
// @grant        none
// @license MIT
// ==/UserScript==

(function () {
    'use strict';

    // Create console panel
    const panel = document.createElement("div");
    panel.style.position = "fixed";
    panel.style.bottom = "10px";
    panel.style.right = "10px";
    panel.style.width = "350px";
    panel.style.height = "260px";
    panel.style.background = "#111";
    panel.style.color = "#0f0";
    panel.style.fontFamily = "monospace";
    panel.style.fontSize = "12px";
    panel.style.border = "2px solid #0f0";
    panel.style.zIndex = "999999";
    panel.style.display = "none";  // Start hidden
    panel.style.flexDirection = "column";
    panel.style.resize = "both";
    panel.style.overflow = "hidden";

    // Header bar (draggable)
    const header = document.createElement("div");
    header.innerText = "🔍 Developer Console V3.2 (created by Jayden)";
    header.style.background = "#222";
    header.style.padding = "5px";
    header.style.cursor = "move";
    header.style.userSelect = "none";

    // Output area
    const output = document.createElement("div");
    output.style.flex = "1";
    output.style.overflowY = "auto";
    output.style.padding = "5px";

    // Input area
    const input = document.createElement("textarea");
    input.placeholder = "Enter JavaScript code... (Shift+Enter for new line)";
    input.style.width = "100%";
    input.style.height = "60px";
    input.style.border = "none";
    input.style.outline = "none";
    input.style.padding = "5px";
    input.style.background = "#222";
    input.style.color = "#0f0";
    input.style.fontFamily = "monospace";
    input.style.fontSize = "12px";
    input.style.resize = "none";

    // Run button
    const runBtn = document.createElement("button");
    runBtn.innerText = "▶ Run Code";
    runBtn.style.background = "#0f0";
    runBtn.style.color = "#000";
    runBtn.style.border = "none";
    runBtn.style.padding = "5px";
    runBtn.style.cursor = "pointer";
    runBtn.style.fontWeight = "bold";
    runBtn.style.fontSize = "12px";

    // Execute code on button click
    runBtn.addEventListener("click", () => {
        executeCode(input.value);
    });

    // Execute on Enter key (but allow Shift+Enter for new line)
    input.addEventListener("keydown", (e) => {
        if (e.key === "Enter" && !e.shiftKey) {
            e.preventDefault();
            executeCode(input.value);
        }
    });

    // Function to execute code
    function executeCode(code) {
        try {
            let result = eval(code);
            output.innerHTML += `<div>> ${code}</div>`;
            output.innerHTML += `<div style="color:#0ff;">${result}</div>`;
        } catch (err) {
            output.innerHTML += `<div style="color:red;">Error: ${err}</div>`;
        }
        input.value = "";
        output.scrollTop = output.scrollHeight;
    }

    // Dragging logic
    let isDragging = false;
    let offsetX, offsetY;
    header.addEventListener("mousedown", (e) => {
        isDragging = true;
        offsetX = e.clientX - panel.offsetLeft;
        offsetY = e.clientY - panel.offsetTop;
        document.addEventListener("mousemove", drag);
        document.addEventListener("mouseup", stopDrag);
    });

    function drag(e) {
        if (isDragging) {
            panel.style.left = (e.clientX - offsetX) + "px";
            panel.style.top = (e.clientY - offsetY) + "px";
            panel.style.bottom = "unset";
            panel.style.right = "unset";
        }
    }
    function stopDrag() {
        isDragging = false;
        document.removeEventListener("mousemove", drag);
        document.removeEventListener("mouseup", stopDrag);
    }

    // Capture console.log
    const originalLog = console.log;
    console.log = function (...args) {
        output.innerHTML += `<div style="color:#0f0;">LOG: ${args.join(" ")}</div>`;
        output.scrollTop = output.scrollHeight;
        originalLog.apply(console, args);
    };

    // Append elements
    const controls = document.createElement("div");
    controls.style.display = "flex";
    controls.appendChild(runBtn);

    panel.appendChild(header);
    panel.appendChild(output);
    panel.appendChild(input);
    panel.appendChild(controls);
    document.body.appendChild(panel);

    // Listen for Ctrl+Q to toggle console panel
    window.addEventListener("keydown", (e) => {
        if (e.ctrlKey && !e.shiftKey && e.code === "KeyQ") {
            e.preventDefault();
            if (panel.style.display === "none") {
                panel.style.display = "flex";
                input.focus();
            } else {
                panel.style.display = "none";
            }
        }
    });
})();