IndexOf

→ number

Returns the zero-based position of the first occurrence of a substring within a string. Returns -1 if not found.

Available in: Email CloudPage Automation Triggered Send

Syntax

Platform.Function.IndexOf(value, search)

2 arguments

Parameters

Name	Type	Required	Description
value	string	Yes	String to search in
search	string	Yes	Substring to find

Examples

var str = "hello@example.com";

var atPos = Platform.Function.IndexOf(str, "@");
Write(atPos); // 5

// Check if substring exists
if (Platform.Function.IndexOf(str, "@") > -1) {
    Write("Contains @");
}

// Find domain part
var domain = Platform.Function.Substring(str, atPos + 2);
// atPos is 0-based, Substring is 1-based, so +2 to skip "@"