indexOf Method


function indexOf(subString : String [, startIndex : Number]) : Number

subString: Required. Substring to search for within the String object.

startIndex: Optional. Integer value specifying the index to begin searching within the String object. If omitted, searching starts at the beginning of the string.

The indexOf method returns an integer value indicating the beginning of the substring within the String object. If the substring is not found, a -1 is returned.

If startIndex is negative, startIndex is treated as zero. If it is larger than the greatest character position index, it is treated as the largest possible index.

Searching is performed from left to right. Otherwise, this method is identical to lastIndexOf.

The following example illustrates the use of the indexOf method.

В	Copy Code
function IndexDemo(str2){ var str1 = "BABEBIBOBUBABEBIBOBU" var s = str1.indexOf(str2); return(s); }

Version 1

Applies To:

String Object

Reference

lastIndexOf Method

Arguments

Remarks

Example

Requirements

Applies To:

See Also

Reference