Node-RED Custom Node Template

node.html

<script type="text/javascript">
	RED.nodes.registerType('NODE_NAME',{
		category: 'The Category',
		color: '#C0DEED',
		defaults: {
		},
		inputs: 1,
		outputs: 1,
		icon: "file.png",
		label: function() {
			return this.name || "NODE_NAME";
		}
	});
</script>

<script type="text/x-red" data-template-name="NODE_NAME">
	<div class="form-row">
			<label for="node-input-name"><i class="icon-tag"></i> Name</label>
			<input type="text" id="node-input-name" placeholder="Name">
	</div>
</script>

<script type="text/x-red" data-help-name="NODE_NAME">
	<p>Description of the NODE_NAME node.</p>
</script>

node.js

function NodeConstruction(RED) {
	const NODE_NAME = 'TODO: Set a node name that can be logged.';
	function CustomNode(config) {
		RED.nodes.createNode(this,config);
		let node = this;
		
		node.on('input', function(msg) {
			node.status({fill:"blue",shape:"ring",text:"working..."})
			if (invalidMsg(msg)){
				//TODO: Build up custom error message.
				node.status({fill:"red",shape:"dot",text:"failed"});
				node.error('errorMsg',msg);
			}
			//TODO: Add custom processing here
			node.status({fill:"green",shape:"dot",text:"done"});
			node.send(msg);
		});
		
		/**
		 * Verifies that the required parameters are all present in the message payload.
		 * @returns {Boolean} Returns true if a required parameter is invalid.
		*/
		function invalidMsg(msg){
			// Note: Keep in mind that the typeof null is 'object'.
			//TODO: Add input validation here.
			return typeof msg.payload === 'undefined' || msg.payload === null ;
		} 

		// Nodes are closed when a new flow is deployed.
		node.on('close', function(done){
			return done();
		});
	}

	let nodeDefinition = {
	};

	RED.nodes.registerType("NODE_NAME", CustomNode, nodeDefinition);
}

module.exports = NodeConstruction;