indexOf (string)

Task Purpose

The string indexOf task finds the position (index) of a specific character or group of characters within a given string. By default, characters in a string are indexed from left to right. The indexOf task is also case-sensitive. In conjunction with other workflow tasks, this task is very useful when you need to find the first instance (or all instances) of when a specific character occurs.

Potential Use Case

Let's say you are attempting to extract email domains from user email addresses, and you need to isolate the exact position of the '@' symbol in the email address. In this scenario, using indexOf will allow you to obtain the information you need.

Properties

Example 1

In this example:

• The str variable has been statically set as abcabcdabcde.
• The searchValue variable is abcd.
• The fromIndex is set to 0, indicating the search should start at the beginning of the line. Remember, numbering starts at zero.
• The output index will be 3, which represents the first instance of where "abcd" can be found in the str variable (at character position 3).

Example 2

In this example:

• The str variable has been statically set as sales@itential.com.
• The searchValue variable has been statically set as @.
• The fromIndex is set to 0, indicating the search should start at the beginning of the line. Remember, numbering starts at zero.
• The output index will be 5, because the first instance of the value @ occurs at character position 5 in the str variable.