「この文章には半角ハテナが含まれているか？」をmatchで調べようとしたらUncaught SyntaxError: Invalid regular expressionで落ちた話。 matchの引数として渡す比較用文字列を、正規表現であることを明記した上でエスケープしておく。ただクオーテーションで囲んで ...

Regular expressions are patterns that provide a powerful way to search and replace in text. In JavaScript, they are available via the RegExp object, as well as being integrated in methods of strings.

Welcome to a comprehensive tutorial on validating email addresses using regular expressions (regex) in JavaScript. In this guide, we'll delve into the intricacies of email regex, dissecting each ...