indexOf() String instance method getterS2C Home
« Globals « String « indexOf()
Description
Returns the index value for the first occurence of the specified string from the specified starting index.
- Returns -1 if the specified string value is not found.
Syntax
| Signature | Description |
|---|---|
aString.indexOf(searchValue[, fromIndex]) | Returns the index value for the first occurence of the specified string from the specified starting index. |
Parameters
| Parameter | Description |
|---|---|
searchValue | A string value. |
fromIndex | An integer between 0 and the length of the string. |
Examples
The code below creates a string of the alphabet and returns starting index for specified string value.
// Create alphabet string varible.
var theAlphabet = 'abcdefghijklmnopqrstuvwxyz';
// Return index of first occurence of search string.
alert(theAlphabet.indexOf('jkl'));
Related Tutorials
JavaScript Basic Tutorials - Lesson 8 - Strings
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