How to show a confirmation form before a node is saved?

05/07/2018


I want to add a functionality in my Drupal site that when someone edits a node and click on save, a confirm message will show “Do you want to change modification date” with Yes & No button. If Yes is clicked, then the node will save in a normal way. If No, the node will be saved with last changed date. How will I do that?

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