PROPERTY:
RegExp::$1, ..., $9
These
are properties containing parenthesized substrings (if any) from a regular
expression. The number of parenthesized substrings is unlimited, but these
properties only hold the last nine. All parenthesized substring, however,
can be accessed throught the returned array's indexes. When used as the
second argument of the String.replace method, these properties
do not require RegExp. before them. In the following example, the
day and month parts of a date written in British format are rearranged
to American style:
Code:
myRegExp = /(\d{2})\W(\d{2})\W(\d{4})/
dateString = "25/12/1997"
newString = dateString.replace(myRegExp, "$2/$1/$3")
document.write(newString)
Output:
12/25/1997
NOTE:
Because input is static, it is always used as RegExp.input
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