# Best way to establish a random (range) injection like node?
**URL:** https://discourse.nodered.org/t/best-way-to-establish-a-random-range-injection-like-node/39342
**Category:** General
**Created:** [18 January 2021 16:10 UTC](https://discourse.nodered.org/t/best-way-to-establish-a-random-range-injection-like-node/39342 "2021-01-18T16:10:34Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@Nodi.Rubrum](https://discourse.nodered.org/u/Nodi.Rubrum)
#### Post date: [18 January 2021 16:10 UTC](https://discourse.nodered.org/t/best-way-to-establish-a-random-range-injection-like-node/39342/1 "2021-01-18T16:10:35Z")
Best way to establish a random (range) injection like node? Need a inject like node, that can have a random time range. For example, node generates message at 1 second, then 3 seconds later, then 2 seconds later, etc., within a qualified range.
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### Author:  [@JGKK](https://discourse.nodered.org/u/JGKK)
#### Post date: [18 January 2021 16:13 UTC](https://discourse.nodered.org/t/best-way-to-establish-a-random-range-injection-like-node/39342/2 "2021-01-18T16:13:37Z")
Maybe use a function node with a recursive setTimeout function that uses a random var?
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### Author:  [@E1cid](https://discourse.nodered.org/u/E1cid)
#### Post date: [18 January 2021 16:15 UTC](https://discourse.nodered.org/t/best-way-to-establish-a-random-range-injection-like-node/39342/3 "2021-01-18T16:15:52Z")
Or a inject that creates a random delay that feeds into a delay node.
```auto
[{"id":"3e45301a.4c0058","type":"inject","z":"57675e72.26a0d8","name":"","props":[{"p":"payload"},{"p":"delay","v":"$ceil($random()*10)*1000","vt":"jsonata"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"","payloadType":"date","x":180,"y":1220,"wires":[["c7b96800.58c8e"]]},{"id":"c7b96800.58c8e","type":"delay","z":"57675e72.26a0d8","name":"","pauseType":"delayv","timeout":"5","timeoutUnits":"seconds","rate":"1","nbRateUnits":"1","rateUnits":"second","randomFirst":"1","randomLast":"5","randomUnits":"seconds","drop":false,"x":340,"y":1220,"wires":[["b84dcbfc.816ad"]]},{"id":"b84dcbfc.816ad","type":"debug","z":"57675e72.26a0d8","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","statusVal":"","statusType":"auto","x":550,"y":1220,"wires":[]}]
```
this will give a delay random set between 1 and 10 seconds
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### Author:  [@JGKK](https://discourse.nodered.org/u/JGKK)
#### Post date: [18 January 2021 16:17 UTC](https://discourse.nodered.org/t/best-way-to-establish-a-random-range-injection-like-node/39342/4 "2021-01-18T16:17:46Z")
Nice forgot that jsonata can do random to.
Very clean 👍🏻 Those are always those small things where jsonata comes in really handy and i have to remind myself to use it more.
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### Author:  [@E1cid](https://discourse.nodered.org/u/E1cid)
#### Post date: [18 January 2021 16:20 UTC](https://discourse.nodered.org/t/best-way-to-establish-a-random-range-injection-like-node/39342/5 "2021-01-18T16:20:31Z")
So much to remember, so little gray matter.
[edit]This may work better
```auto
[{"id":"6923bf.c6d0e44","type":"inject","z":"57675e72.26a0d8","name":"","props":[{"p":"reset","v":"true","vt":"bool"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","x":80,"y":1340,"wires":[["c7b96800.58c8e"]]},{"id":"3e45301a.4c0058","type":"inject","z":"57675e72.26a0d8","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"","payloadType":"date","x":90,"y":1280,"wires":[["8a78a9a6.792a38"]]},{"id":"8a78a9a6.792a38","type":"change","z":"57675e72.26a0d8","name":"","rules":[{"t":"set","p":"delay","pt":"msg","to":"$ceil($random()*10)*1000","tot":"jsonata"}],"action":"","property":"","from":"","to":"","reg":false,"x":190,"y":1200,"wires":[["c7b96800.58c8e"]]},{"id":"c7b96800.58c8e","type":"delay","z":"57675e72.26a0d8","name":"","pauseType":"delayv","timeout":"5","timeoutUnits":"seconds","rate":"1","nbRateUnits":"1","rateUnits":"second","randomFirst":"1","randomLast":"5","randomUnits":"seconds","drop":false,"x":400,"y":1240,"wires":[["8a78a9a6.792a38","b84dcbfc.816ad"]]},{"id":"b84dcbfc.816ad","type":"debug","z":"57675e72.26a0d8","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","statusVal":"","statusType":"auto","x":670,"y":1280,"wires":[]}]
```
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### Author:  [@system](https://discourse.nodered.org/u/system)
#### Post date: [19 March 2021 16:20 UTC](https://discourse.nodered.org/t/best-way-to-establish-a-random-range-injection-like-node/39342/6 "2021-03-19T16:20:32Z")
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