hi, i am trying to interact from Node-Red towards a webpage (online POS) via Postmessage.
already tried a lot of options but without succes. Hope someone can help me getting started.
Is there a node where i can pass this message to another open tab in the browser?
window.postMessage(JSON.stringify({
method: 'add-customer',
params: {
customer_id: '080027ac-bd2c-11e5-ec95-d12579aa90a3'
}
}), window.location.origin);