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node-red-nodes/function/random/random.js

36 lines
1.2 KiB
JavaScript

/**
* Copyright 2014 IBM Corp.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
**/
module.exports = function(RED) {
"use strict";
function RandomNode(n) {
RED.nodes.createNode(this,n);
this.low = Number(n.low || 1);
this.high = Number(n.high || 10);
this.inte = n.inte || false;
var node = this;
this.on("input", function(msg) {
if (node.inte === true) {
msg.payload = Math.round(Number(Math.random()) * (node.high - node.low + 1) + node.low - 0.5);
} else {
msg.payload = Number(Math.random()) * (node.high - node.low) + node.low;
}
node.send(msg);
});
}
RED.nodes.registerType("random",RandomNode);
}