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**Category:** General\
**Created:** [17 November 2021 22:12 UTC](https://discourse.nodered.org/t/html-parse-value/53916 "2021-11-17T22:12:20Z")\
**Posts on this page:** 8\
**Page:** 1
**Author:**  [@steinerma](https://discourse.nodered.org/u/steinerma)\
**Post date:** [17 November 2021 22:12 UTC](https://discourse.nodered.org/t/html-parse-value/53916/1 "2021-11-17T22:12:20Z")
Hi,
I would like to parse the value of the frequency ( **currently 50.011 Hz** ) from the website [https://www.netzfrequenz.info/](https://www.netzfrequenz.info/). Unfortunately I don't have a idea how to do that.
I have set the following:
Do you have a hint what I have to set?
i have a guess that i have chosen a wrong selector
here the whole flow
```auto
[{"id":"3ab27a41.60baa6","type":"inject","z":"dbd92bb5.58bb68","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"300","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"","payloadType":"date","x":270,"y":580,"wires":[["6f88489b.7f3f88"]]},{"id":"6f88489b.7f3f88","type":"http request","z":"dbd92bb5.58bb68","name":"https://www.netzfrequenz.info/","method":"GET","ret":"txt","paytoqs":"ignore","url":"https://www.netzfrequenz.info/","tls":"","persist":false,"proxy":"","authType":"","x":520,"y":580,"wires":[["75d0dac2.a64df4","c259c87fb199432a"]]},{"id":"6957b0.d583785","type":"switch","z":"dbd92bb5.58bb68","name":"Inhalt testen","property":"payload","propertyType":"msg","rules":[{"t":"regex","v":"Aktuelle Netzfrequenz","vt":"str","case":true},{"t":"else"}],"checkall":"true","repair":false,"outputs":2,"x":1130,"y":480,"wires":[["56293aaf9df4bbae"],[]]},{"id":"75d0dac2.a64df4","type":"html","z":"dbd92bb5.58bb68","name":"Text suchen","property":"payload","outproperty":"payload","tag":"#frequenz","ret":"text","as":"multi","x":880,"y":480,"wires":[["6957b0.d583785","e5e53dea916dc3cf"]]},{"id":"56293aaf9df4bbae","type":"debug","z":"dbd92bb5.58bb68","name":"","active":true,"tosidebar":true,"console":true,"tostatus":true,"complete":"payload","targetType":"msg","statusVal":"payload","statusType":"auto","x":1400,"y":460,"wires":[]},{"id":"e5e53dea916dc3cf","type":"debug","z":"dbd92bb5.58bb68","name":"TEST FREQUENZ","active":true,"tosidebar":true,"console":true,"tostatus":true,"complete":"payload","targetType":"msg","statusVal":"payload","statusType":"auto","x":1160,"y":400,"wires":[]},{"id":"c259c87fb199432a","type":"debug","z":"dbd92bb5.58bb68","name":"","active":true,"tosidebar":true,"console":true,"tostatus":true,"complete":"payload","targetType":"msg","statusVal":"payload","statusType":"auto","x":880,"y":640,"wires":[]}]
```
thanks a lot for your help!
---
**Author:**  [@dceejay](https://discourse.nodered.org/u/dceejay)\
**Post date:** [17 November 2021 22:20 UTC](https://discourse.nodered.org/t/html-parse-value/53916/2 "2021-11-17T22:20:47Z")
that looks like a rather dynamic page so will be hard to parse - but if you dig in quite a way you can find that it is actually this url you need to request - [https://www.netzfrequenz.info/json/act.json](https://www.netzfrequenz.info/json/act.json)
---
**Author:**  [@steinerma](https://discourse.nodered.org/u/steinerma)\
**Post date:** [17 November 2021 22:25 UTC](https://discourse.nodered.org/t/html-parse-value/53916/3 "2021-11-17T22:25:28Z")
Wow great - thank you so much!!! So it works perfectly!
Is there also a json object for this page? [Aktuelle Netzkennzahlen](https://www.swissgrid.ch/de/home/operation/grid-data/current-data.html)
---
**Author:**  [@steinerma](https://discourse.nodered.org/u/steinerma)\
**Post date:** [18 November 2021 05:27 UTC](https://discourse.nodered.org/t/html-parse-value/53916/4 "2021-11-18T05:27:04Z")
Please excuse my imprecise question. Is there also a way to read out the marked value (currently 49.987 Hz) with JSON? That would be great
Website: [Aktuelle Netzkennzahlen](https://www.swissgrid.ch/de/home/operation/grid-data/current-data.html)
---
**Author:**  [@dceejay](https://discourse.nodered.org/u/dceejay)\
**Post date:** [18 November 2021 08:18 UTC](https://discourse.nodered.org/t/html-parse-value/53916/5 "2021-11-18T08:18:20Z")
The data seems to be from [https://www.swissgrid.ch/bin/services/apicache?path=/content/swissgrid/de/home/operation/grid-data/current-data/jcr:content/parsys/chart\_copy](https://www.swissgrid.ch/bin/services/apicache?path=/content/swissgrid/de/home/operation/grid-data/current-data/jcr:content/parsys/chart_copy)
which is a complete json object for the chart and data.
---
**Author:**  [@steinerma](https://discourse.nodered.org/u/steinerma)\
**Post date:** [18 November 2021 12:24 UTC](https://discourse.nodered.org/t/html-parse-value/53916/6 "2021-11-18T12:24:24Z")
That's great! thank you very, very much!
One last question: where do you get the information from the source code?
---
**Author:**  [@dceejay](https://discourse.nodered.org/u/dceejay)\
**Post date:** [18 November 2021 12:53 UTC](https://discourse.nodered.org/t/html-parse-value/53916/7 "2021-11-18T12:53:49Z")
In both cases I used the browser dev tools window to look at the network tab to see the live traffic
eg
Then looked at the url they were constantly reloading...
---
**Author:**  [@system](https://discourse.nodered.org/u/system)\
**Post date:** [2 December 2021 12:54 UTC](https://discourse.nodered.org/t/html-parse-value/53916/8 "2021-12-02T12:54:10Z")
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