Node-Red亂數產生 暨 函數的寫法
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const MIN = 1; const MAX = 99; //The maximum is exclusive and the minimum is inclusive msg.payload =function getRandomInt(min = MIN, max = MAX) { min = Math.ceil(min); max = Math.floor(max); return Math.floor(Math.random() * (max - min)) + min; } return msg; |
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const MIN = 1; const MAX = 99; //The maximum is exclusive and the minimum is inclusive function getRandomInt(min = MIN, max = MAX) { min = Math.ceil(min); max = Math.floor(max); return Math.floor(Math.random() * (max - min)) + min; }
var no1=getRandomInt(min = MIN, max = MAX); var no2=getRandomInt(min = MIN, max = MAX); var no3=getRandomInt(min = MIN, max = MAX); var no4=getRandomInt(min = MIN, max = MAX);
var payload=[]; var obj={"steve":no1,"Bella":no2}; payload.push(obj);
var obj={"shanna":no3,"saskia":no4}; payload.push(obj); msg.payload=payload; return msg; |
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//===setting=== var hpoint = 100; var lpoint = 0; var cent = 10; //centralize number //===============
var mpoint = 0; var output = context.get('output')||0; var addpoint = context.get('addpoint')||0;
//count var count = context.get('count')||0; count += 1; context.set('count',count);
//rcount var rcount = context.get('rcount')||0; if(count >= rcount){ for(i=0;i<cent;i++){ //centralize mpoint = mpoint + Math.floor(Math.random() * hpoint); } rcount = parseInt(Math.floor(Math.random() * 100)/5); addpoint = ((mpoint/cent)-output)/rcount; context.set('addpoint',addpoint); context.set('rcount',rcount); context.set('count',0); }else{ output = parseFloat((output + addpoint).toFixed(1)); context.set('output',output); } msg.payload = output; return msg; |
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const MIN = 1; const MAX = 99; //The maximum is exclusive and the minimum is inclusive
switch (msg.payload) {
case "undefined" : msg.payload = undefined; break;
case "null" : msg.payload = null; break;
case "random" : msg.payload =function getRandomInt(min = MIN, max = MAX) { min = Math.ceil(min); max = Math.floor(max); return Math.floor(Math.random() * (max - min)) + min; }(); break; }
return msg; |
Node-Red程式
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