RegExp

Required. The global RegExp object.

reArray

Required. An array returned by the exec method of a Regular Expression object.

The index property is zero-based.

The initial value of the RegExp.index property is –1. Its value is read-only and changes whenever a successful match is made.

Note
The properties of the RegExp object are not available when running in fast mode, the default for JScript. To compile a program from the command line that uses these properties, you must turn off the fast option by using /fast-. It is not safe to turn off the fast option in ASP.NET because of threading issues.

The following example illustrates the use of the index property. This function iterates a search string and prints out the index and lastIndex values for each word in the string.

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var src : String = "The rain in Spain falls mainly in the plain."; var re : RegExp = /\w+/g; var arr : Array; while ((arr = re.exec(src)) != null) print(arr.index + "-" + arr.lastIndex + "\t" + arr);

The output of this program is:

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0-3 The 4-8 rain 9-11 in 12-17 Spain 18-23 falls 24-30 mainly 31-33 in 34-37 the 38-43 plain

Version 3

Reference

Concepts