# How to implement a 'if-else' logic to decide whether trigger a node?

**URL:** <https://discourse.nodered.org/t/how-to-implement-a-if-else-logic-to-decide-whether-trigger-a-node/71206>\
**Category:** General\
**Tags:** function-node\
**Created:** [24 November 2022 18:39 UTC](https://discourse.nodered.org/t/how-to-implement-a-if-else-logic-to-decide-whether-trigger-a-node/71206 "2022-11-24T18:39:29Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![5Reasons](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/5reasons/32/71306_2.png) [@5Reasons](https://discourse.nodered.org/u/5Reasons)\
**Post date:** [24 November 2022 18:39 UTC](https://discourse.nodered.org/t/how-to-implement-a-if-else-logic-to-decide-whether-trigger-a-node/71206/1 "2022-11-24T18:39:29Z")

</div>

![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/4/9/49157d2d2d2fffcab8d4270f9b0852d3462fcc36.png)

As the picture, I want to implement a logic that is:  
if the data I get is higher than xxx, then send an email to notice myself.  
else, don't send the email to disturb myself.

How to do that in node-red? Really confuse me :((

---

<div class="post-metadata">

**Author:** ![E1cid](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/e1cid/32/77971_2.png) [@E1cid](https://discourse.nodered.org/u/E1cid)\
**Post date:** [24 November 2022 18:53 UTC](https://discourse.nodered.org/t/how-to-implement-a-if-else-logic-to-decide-whether-trigger-a-node/71206/2 "2022-11-24T18:53:38Z")

</div>

You can do conditionals in a switch node.

---

<div class="post-metadata">

**Author:** ![5Reasons](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/5reasons/32/71306_2.png) [@5Reasons](https://discourse.nodered.org/u/5Reasons)\
**Post date:** [24 November 2022 18:54 UTC](https://discourse.nodered.org/t/how-to-implement-a-if-else-logic-to-decide-whether-trigger-a-node/71206/3 "2022-11-24T18:54:28Z")

</div>

Yeah yeah I find that, quite stupid question lol

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [23 January 2023 18:55 UTC](https://discourse.nodered.org/t/how-to-implement-a-if-else-logic-to-decide-whether-trigger-a-node/71206/4 "2023-01-23T18:55:01Z")

</div>

This topic was automatically closed 60 days after the last reply. New replies are no longer allowed.