indexOf

indexOf(array: Array, value: Any): Number

Returns the index of the first occurrence of the specified element in this array, or -1 if this list does not contain the element.

Introduced in DataWeave version 2.4.0.

Parameters

Name Description

Name	Description
`array`	The array of elements to search.
`value`	The value to search.

array

The array of elements to search.

value

The value to search.

Example

This example shows how indexOf behaves given different inputs.

Source

%dw 2.0
output application/json
---
{
  present: ["a","b","c","d"] indexOf "c",
  notPresent: ["x","w","x"] indexOf "c",
  presentMoreThanOnce: ["a","b","c","c"] indexOf "c",
}DataWeave

Output

{
   "present": 2,
   "notPresent": -1,
   "presentMoreThanOnce": 2
 }Json

indexOf(theString: String, search: String): Number

Returns the index of the first occurrence of the specified String in this String.

Introduced in DataWeave version 2.4.0.

Parameters

Name Description

Name	Description
`theString`	The string to search.
`search`	The string to find within `theString`.

theString

The string to search.

search

The string to find within theString.

Example

This example shows how the indexOf behaves under different inputs.

Source

%dw 2.0
output application/json
---
{
  present: "abcd" indexOf "c",
  notPresent: "xyz" indexOf "c",
  presentMoreThanOnce: "abcdc" indexOf "c",
}DataWeave

Output

{
   "present": 2,
   "notPresent": -1,
   "presentMoreThanOnce": 2
 }Json

indexOf(array: Null, value: Any): Number

Helper method to make indexOf null friendly

Introduced in DataWeave version 2.4.0.