charCodeAt charCodeAt(content: String, position: Number): Number Returns the Unicode for a character at the specified index. This function fails if the index is invalid. Parameters Name Description content The input string. position The index (a Number type) of a character in the string (as a string array). Note that the index of the first character is 0. Example This example returns Unicode for the "u" at index 1 in "MuleSoft". Source %dw 2.0 import * from dw::core::Strings output application/json --- { "charCodeAt" : charCodeAt("MuleSoft", 1) } Output { "charCodeAt": 117 } charCodeAt(content: Null, position: Any): Null Helper function that enables charCodeAt to work with a null value. Introduced in DataWeave version 2.4.0.