string.IndexOf()

Returns the zero-based index number of the first occurrence of the specified substring within the string.

Syntax

int string.IndexOf(string lookup-string)

Parameters

Parameter Type Description
lookup-string (required) string The substring whose index is to be retrieved.

Returns

The index number at which the lookup-string occurs in the string. The method returns -1 if the lookup-string does not occur in the string.

Sample

stringSample.rfs

var str = "My hovercraft is full of eels.";
...
var e = str.IndexOf("eels");
trace "My eels are safe at position ", e;
trace str.IndexOf("Inquisition");
"My eels are safe at position ", 25
-1

Figure 331. The trace message output of the script above


Related links

string.SubString()   string.ToLower()
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