By default, IPython (kernel of Jupyter/Lab notebook) disables executation of untrusted code without explicit user input. If you have notebook whose output containings JavaScript (e.g., JS-based visualiation) and code wasn't run by you (e.g., the notebook is shared by someone else), the JS-based output won't be shown by default. For more explanation, please refer to Notebook Security.
There are currently 2 ways to trust a notebook. First, you can trust (multiple) notebooks via command-line.
jupyter trust path_to_notebook.ipynb
jupyter trust notebook1.ipynb notebook2.ipynb
jupyter trust *.ipynb
Second,
you can trust a notebook using the Trust Notebook
comamnd from the command tab in the left panel.
-
Click the on the
Commands
tab in the left panel. -
Search for
Trust Notebook
. -
Click the
Trust Notebook
button to trust a notebook. You will get a prompt to confirm your action.