text: let download_btn = document.querySelector("#downlaod_btn");
  let err_msg = "ERR::503:NOT_IMPLEMENTED";
  let root_code = document.querySelector("#code_1");
  let win_object = document.querySelector("#code_2");
  let loop_func = document.querySelector("#code_3");
  let conf_func = document.querySelector("#code_4");
  let errwarninfo_func = document.querySelector("#code_5");
  
  download_btn.addEventListener('click', (e)=>{
      fetch("assets/others/ShortTkRequiedTools.zip")
      .then(
          window.open("assets/others/ShortTkRequiedTools.zip")
      )
      .catch(e.err, (e)=>{
          console.error(e.err);
      })
  });
  
  root_code.addEventListener('click', ()=>{
      navigator.clipboard.writeText("import short_tk\n\nshort_tk.Window(root_title=data, root_size=data, root_bg=data, root_favicon=data)\n\nlabel = Label(short_tk.root, text='hello world!')\nlabel.pack()\n\nshort_tk.Loop(loop=True)");
  });
  
  win_object.addEventListener('click', ()=>{
      navigator.clipboard.writeText("import short_tk\n\nshort_tk.Window(root_title=data, root_size=data, root_bg=data, root_favicon=data)");
  });
  
  loop_func.addEventListener('click', ()=>{
      navigator.clipboard.writeText("import short_tk\n\nshort_tk.Window(root_title=data, root_size=data, root_bg=data, root_favicon=data)\n\n# tkinter code\n\nshort_tk.Loop(loop=true)");
  });
  conf_func.addEventListener('click', ()=>{
      navigator.clipboard.writeText("import short_tk\n\nshort_tk.Window(root_title=data, root_size=data, root_bg=data, root_favicon=data)\n\n# Tkinter code\nshort_tk.Window.Conf(data)\nshort_tk.Window.Loop(loop=True)");
  });
  errwarninfo_func.addEventListener('click', (e)=>{
      navigator.clipboard.writeText(`import short_tk\n\nshort_tk.Window(root_title=data, root_size=data, root_bg=data, root_favicon=data)\n\nshort_tk.Window.Err("MyApp:", "A test Error!")\n\nshort_tk.Window.Warn("MyApp:", "A test Warning!")\nshort_tk.Window.Info("MyApp:", "A test Info.")\nshort_tk.Window.Loop(loop=True)`);
  });
  