random-generator_node-red-contrib/nodes/numberGenerator.js

A package to meet the randomness generation needs of node-red developers

module.exports = function (RED) {
  function randomNumberGenerator(config) {
    RED.nodes.createNode(this, config);
    var node = this;
    node.on("input", function (msg) {
      min = config.minimum == "" ? 0 : parseInt(config.minimum);
      max = config.maximum == "" ? 1 : parseInt(config.maximum);
      roundTo = config.roundTo == "" ? 2 : parseInt(config.roundTo);
      if (min >= max) node.error("minimum value should be less than maximum");
      else {
        msg.payload = config.Floor
          ? Math.round(Math.random() * max + min)
          : parseFloat((Math.random() * max + min).toFixed(parseInt(roundTo)));

        node.send(msg);
      }
    });
  }
  RED.nodes.registerType("Number", randomNumberGenerator);
};