Customizing the Notebook interface with JavaScript.ipynb

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    "## Customizing the Notebook interface with JavaScript"
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       "\n",
       "// This function allows us to add buttons\n",
       "// to the Notebook toolbar.\n",
       "IPython.toolbar.add_buttons_group([\n",
       "{\n",
       "\n",
       "    // The button's label.\n",
       "    'label': 'Renumber all code cells',\n",
       "\n",
       "    // The button's icon.\n",
       "    // See a list of Font-Awesome icons here:\n",
       "    // http://fortawesome.github.io/Font-Awesome/icons/\n",
       "    'icon': 'fa-anchor',\n",
       "\n",
       "    // The callback function called when the button is pressed.\n",
       "    'callback': function () {\n",
       "\n",
       "        // We retrieve the lists of all cells.\n",
       "        var cells = IPython.notebook.get_cells();\n",
       "\n",
       "        // We only keep the code cells.\n",
       "        cells = cells.filter(function(c)\n",
       "            {\n",
       "                return c instanceof IPython.CodeCell;\n",
       "            })\n",
       "\n",
       "        // We set the input prompt of all code cells.\n",
       "        for (var i = 0; i < cells.length; i++) {\n",
       "            cells[i].set_input_prompt(i + 1);\n",
       "        }\n",
       "    }\n",
       "}]);"
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    "%%javascript\n",
    "\n",
    "// This function allows us to add buttons\n",
    "// to the Notebook toolbar.\n",
    "IPython.toolbar.add_buttons_group([\n",
    "{\n",
    "\n",
    "    // The button's label.\n",
    "    'label': 'Renumber all code cells',\n",
    "\n",
    "    // The button's icon.\n",
    "    // See a list of Font-Awesome icons here:\n",
    "    // http://fortawesome.github.io/Font-Awesome/icons/\n",
    "    'icon': 'fa-anchor',\n",
    "\n",
    "    // The callback function called when the button is pressed.\n",
    "    'callback': function () {\n",
    "\n",
    "        // We retrieve the lists of all cells.\n",
    "        var cells = IPython.notebook.get_cells();\n",
    "\n",
    "        // We only keep the code cells.\n",
    "        cells = cells.filter(function(c)\n",
    "            {\n",
    "                return c instanceof IPython.CodeCell;\n",
    "            })\n",
    "\n",
    "        // We set the input prompt of all code cells.\n",
    "        for (var i = 0; i < cells.length; i++) {\n",
    "            cells[i].set_input_prompt(i + 1);\n",
    "        }\n",
    "    }\n",
    "}]);"
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