extpay/sample-extension-mv3/popup.js

The JavaScript library for https://extensionpay.com - payments for browser extensions, no server needed.

// Replace 'sample-extension' with the id of the extension you
// registered on ExtensionPay.com to test payments. You may need to
// uninstall and reinstall the extension to make it work.
// Don't forget to change the ID in background.js too!
const extpay = ExtPay('sample-extension') 

document.querySelector('button').addEventListener('click', extpay.openPaymentPage)

extpay.getUser().then(user => {
    if (user.paid) {
        document.querySelector('p').innerHTML = 'User has paid! 🎉'
        document.querySelector('button').remove()
    }
}).catch(err => {
    document.querySelector('p').innerHTML = "Error fetching data :( Check that your ExtensionPay id is correct and you're connected to the internet"
})
    
// extpay.onPaid(function() { console.log('popup paid')});