lastIndex

public property int lastIndex()

public property void lastIndex(int index)

The last index in the string to start the regular expression match from.

The specified index for the last index.

Parameters

index

The index to set the lastIndex to.

This getter property will return the lastIndex for the regular expression. The lastIndex is the index in the string that the regular expression will start matching from in a global match (using the g flag).

This setter property will set the lastIndex for the regular expression to start a global match from.

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import System;   System.RegExp re = new System.RegExp(/a/g); bool match = re.test("There is a way."); Console.log(re.lastIndex); // 13

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import System;   System.RegExp re = new System.RegExp(/a/g); re.lastIndex = 11; // set the last index AFTER the first occurrence of "a" Console.log(re.exec("There is a way.")); // ["a"] // the match comes from the 'a' in "way", not "a" (the indefinite article)