String.IndexOf
Returns the index where the string was first found.

Properties
| Property Name | Description | 
|---|---|
| String | String | 
| Value | String to judge whether it is rare | 
| Start Index | Start index to judge | 
| Count | The number of characters in the string to be judged. If a negative value is specified, the end of the character string is judged. | 
| String Comparison | Specify the rules for judgment. | 
| Result | Result output |