RegExp.$1,$2,..$9
JavaScript 1.2+, JScript 3.0+ Nav4+, NES3+, IE4+ Syntax
RegExp.$1,$2,..$9
Description
The RegExp.$1,$2,..$9 property represents parenthesized substring matches.
Example
Listing 6.213 shows how RegExp.$1,$2,..$9 is used. The user will enter his or her phone number in the input text box and, when the button is clicked, the swap function swaps the last 4 digits in the phone number with the first three.
Listing 6.213 Example of RegExp.$1,$2,..$9
<html> <body> <script language="JavaScript1.2"> <!–– Hide // function takes the input and swaps the last 4 digits with the // first three digits function swap(){ re = /(\w+)\D(\w+)/; str = document.form1.text1.value; newstr=str.replace(re, "$2, $1"); document.form1.text2.value ... |
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