setTimeout(() => {

        // fuck up all future javascripts

        setTimeout = setInterval = requestAnimationFrame = () => {};
        Element.prototype.appendChild = () => { throw new Error("Blocked"); };
        document.addEventListener = () => {};
        window.addEventListener = () => {};
        Object.defineProperty(document, "readyState", { get: () => { throw new Error("No JS"); } });
        document.write = () => {};

        // fuck up canvas
        if(window.HTMLCanvasElement) HTMLCanvasElement.prototype.getContext=()=>null; 

        // fuck up webgl
        if(window.WebGLRenderingContext) window.WebGLRenderingContext.prototype.getParameter=function(){e=>{throw new Error("Blocked")}};

        // fuck up webgl2
        if(window.WebGL2RenderingContext) window.WebGL2RenderingContext.prototype.getParameter=function(){e=>{throw new Error("Blocked")}};

        // fuck up websockets
        window.WebSocket=function(){e=>{throw new Error("Blocked")}}; window.EventSource=function(){e=>{throw new Error("Blocked")}};

        // fuck up popups
        window.open=()=>null;

        // ...

    }, 500);