Merge branch 'smamudhan-IF'

docs/nodes/nodes-library/core-nodes/If/README.md

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+---
+permalink: /nodes/n8n-nodes-base.if
+---
+
+# IF
+
+The IF node is used to split a workflow conditionally based on comparison operations.
+
+## Node Reference
+
+You can add comparison conditions using the ***Add Condition*** dropdown. Conditions can be created based on the data type, the available comparison operations vary for each data type.
+
+- Boolean
+	- Equal
+	- Not Equal
+- Number
+	- Smaller
+	- Smaller Equal
+	- Equal
+	- Not Equal
+	- Larger
+	- Larger Equal
+- String
+	- Contains
+	- Equal
+	- Not Contains
+	- Not Equal
+	- Regex
+
+You can choose to split a workflow when any of the specified conditions are met, or only when all the specified conditions are met using the options in the ***Combine*** dropdown list.
+
+
+## Example Usage
+
+This workflow executes two different *Set* nodes based on the output given by an *IF* node. You can also find the [workflow](https://n8n.io/workflows/581) on the website. This example usage workflow would use the following four nodes.
+- [Start](../../core-nodes/Start/README.md)
+- [Function](../../core-nodes/Function/README.md)
+- [IF]()
+- [Set](../../core-nodes/Set/README.md)
+
+
+The final workflow should look like the following image.
+
+![A workflow with the IF node](./workflow.png)
+
+### 1. Start node
+
+The start node exists by default when you create a new workflow.
+
+
+### 2. Function node
+
+1. Enter the following code in the ***Function*** field.
+```
+return [
+  {
+    json: {
+      id: 0,
+    }
+  },
+  {
+    json: {
+      id: 1,
+    }
+  }
+];
+```
+2. Click on ***Execute Node*** to run the workflow.
+
+![Using the Function node to send data to the IF node](./Function_node.png)
+
+
+### 2. IF node
+
+:::v-pre
+1. Click on the ***Add Condition*** button and select 'Number' from the dropdown list.
+2. Click on the gears icon next to the ***Value 1*** field and click on ***Add Expression***.
+3. Select the following in the ***Variable Selector*** section: Nodes > Function > Output Data > JSON > id. You can also add the following expression: `{{$node["Function"].json["id"]}}`.
+4. From the ***Operation*** dropdown list, select 'Equal'.
+5. Click on ***Execute Node*** to run the workflow.
+:::
+
+![Using the IF node to conditionally execute based on the input](./IF_node.png)
+
+
+### 3. Set node (for 'true' condition)
+
+1. Create a *Set* node connected to the 'true' output of the IF node.
+2. Click on the ***Add Value*** button and select 'String' from the dropdown list.
+3. Enter `name` in the ***Name*** field.
+4. Enter `n8n` in the ***Value*** field.
+5. Click on ***Execute Node*** to run the workflow.
+
+**Note:** Notice that only the id with the value 0 made its way to this *Set* node.
+
+![Using the Set node to set a value when the condition is true](./Set_node.png)
+
+
+### 4. Set node (for 'false' condition)
+
+1. Create a *Set* node connected to the 'false' output of the IF node.
+2. Click on the ***Add Value*** button and select 'String' from the dropdown list.
+3. Enter `name` in the ***Name*** field.
+4. Enter `nodemation` in the ***Value*** field.
+5. Click on ***Execute Node*** to run the workflow.
+
+**Note:** Notice that only the id with the value 1 made its way to this *Set* node.
+
+![Using the Set node to set a value when the condition is false](./Set1_node.png)