dw-arrays-functions-indexof.adoc

indexOf

indexOf<T>(array: Array<T>, toFind: T): Number

Returns the index of the first occurrence of an element within the array. If the value is not found, the function returns -1.

Introduced in DataWeave version 2.2.0.

Parameters

Name	Description
array	The array of elements.
toFind	The element to find.

Example

This example returns the index of the matching value from the input array. The index of "Julian" is 2.

Source

%dw 2.0
import * from dw::core::Arrays
output application/json
var users = ["Mariano", "Leandro", "Julian"]
---
indexOf(users, "Julian")

Output

2