Cancel a click on dcc.Link before Location updates?

[AnnMarieW]

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Prevent user from leaving dash app

A way to deal with this is by using JavaScript. JavaScript can be included in a Dash app via the assets directory: https://dash.plotly.com/external-resources Then one can use straight forward JavaScript code to let the user confirm the exit of the page: // This default onbeforeunload event window.onbeforeunload = function(){ return "Do you want to leave?" }