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<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <title>JavaScript Specify Alternative Version of a Pattern in a Regular Expression</title> </head> <body> <script> var regex = /fox|dog|cat/; var str = "The quick brown fox jumps over the lazy dog."; var matches = str.match(regex); document.write("Matches the substring: " + matches); console.log(matches); // expected output: ["fox", index: 16, ...] </script> </body> </html>
