JavaScript lastIndex Property
 JavaScript RegExp Object
Definition and Usage
The lastIndex property specifies the index at which to start the next match.
Note: This property only works if the "g" modifier is set.
This property returns an integer that specifies the character position
immediately after the last match found by exec( ) or test( ) methods.
Note: exec( ) and test( ) reset lastIndex to 0 if they do not get a
match.
Syntax
Example
Example
Do a global search for "ain" in a string, and output the index after a match is found:
<script type="text/javascript">
var str="The rain in Spain stays mainly in the plain";
var patt1=/ain/g;
while (patt1.test(str)==true)
{
document.write("'ain' found. Index now at: "+patt1.lastIndex);
document.write("<br />");
}
</script> |
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JavaScript RegExp Object
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