30 days of JavaScript programming challenge is a step-by-step guide to learn JavaScript programming language in 30 days. This challenge may take more than 100 days, please just follow your own pace.
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origin: const txt = 'This regular expression example was made in December 6, 2019.' const pattern = /\\b\w{4}\b/g // exactly four character words const matches = txt.match(pattern) console.log(matches) //['This', 'made', '2019'] but the resault is null in my test maybe you have used one more \...