// This is a simple listener for clicking on the close button in the error message.
$('#close-error-btn').click(function () {
$('#error-message-wrapper').hide();
});
// This is the listener that will receive the post message from your front-end JS in case of an error.
window.addEventListener("message", function (e) {
// We verify that the error message is coming from Piano, so it must be what we're looking for.
if (typeof e.data.piano != 'undefined') {
// Get the object with the result.
var result = e.data.piano;
// We know how this object should be structured, so we're checking for the "success" field.
// We're expecting it to be false, so we can show an error message.
if (!result.success) {
// Show the error block.
$('#error-message-wrapper').show();
// Append the text message into the block.
$('#error-message').text("Error signing up. Valid email? Are you already signed up? The Sifted newsletter contains a link to manage your preferences.");
} else {
$('.newsletter-email-input').hide();
$('.newsletter-submission-success').show();
}
}
return;
}, false);
Learn from the experts
Get insights, tips and tricks from Europe’s leading startup operators.
Sign up for our free Startup Life newsletter.