Source code in the jsish programming language

/* Regular expressions, in Jsish */

var re = /s[ai]mple/;
var sentence = 'This is a sample sentence';

var matches = sentence.match(re);
if (matches.length > 0) printf('%s found in "%s" using %q\n', matches[0], sentence, re);

var replaced = sentence.replace(re, "different");
printf("replaced sentence is: %s\n", replaced);