I am using the one-step checkout and Paypal payment method. On clicking the PayPal button on the checkout page, I want to show a custom message if the terms and conditions checkbox is not checked to notify the customer to check the terms and conditions checkbox. How can I do this? I could not find the click event for the Paypal button.
Please check this link
How to add validation on checkbox , select option and text fields in magento 2?
I hope it will solve your issue.