# INDEXOF

The *INDEXOF* function returns the index of the first occurrence of a specified value within a list of values. The arguments can be numeric values or node references. If the value is not found in the list, the function returns -1.

#### Syntax

```javascript
INDEXOF(list, value)
```

#### Arguments

* `list`: The list of values to search.
* `value`: The value to find in the list.

#### Return value

Returns the index of the first matching value in the list. The index starts at 0. If no match is found, the function returns -1.

#### Example

```javascript
INDEXOF([2025.Q2.Actuals, 2025.Q3.Actuals, 2025.Q4.Actuals], 2025.Q1.Actuals)
```

In this example, the INDEXOF function is used to identify whether the *Q1 Actuals* value of 2025 exists in the *Q2 Actuals*, *Q3 Actuals*, and *Q4 Actuals* values of 2025 and returns its index position.

<figure><img src="/files/2syJ0qk608EEYnrpQXGJ" alt=""><figcaption></figcaption></figure>


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.fabricplan.com/planning-sheets/formula-syntax/math-functions/indexof.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.