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String replace()

Syntax string.replace(regexpression, replacestring) The replace() method searches the string for the regular expression passed to the method. If a match is found, the method returns a new string with that match replaced with the replacement string passed to the method. See the reference entry for RegExp. <html>     <script language="JavaScript1.2">     <!--     var myString = new String("This is a test");     var myRegExp = /is/g;     var newString = myString.replace(myRegExp, "test");     document.write('Notice the last name in the original string, ' + myString);     document.write(', was replaced and is now '+ newString);     document.close();     -->     </script> </html>