Debug messages using uibuilder - TotallyInformation/node-red-contrib-uibuilder GitHub Wiki

See the following flow to use this example:

https://flows.nodered.org/flow/2cefa818970963b7fb79a48929538e53

It will dump any msg you send to the uibuilder node out to the front-end web page and will nicely format it. You will get an entry on the page for every topic that you send.