function verificarTexto(texto) {

    var regex = /\d/; // Regex para encontrar dígitos numéricos

​

    if (regex.test(texto)) {

        console.log("Texto com números: " + texto);

    } else {

        console.log("Texto sem números");

    }

}

​

// Exemplos de uso

verificarTexto("Este é um teste com o número 123");

verificarTexto("Este é um teste sem número");

​

Here are some key things to know about regex in JavaScript:

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You can create a regex pattern using the /pattern/flags syntax, where pattern is the regex pattern and flags are optional flags like g for global matches or i for case-insensitive matches.

You can use methods like string.match(), string.replace(), and string.test() to perform regex operations on strings.

 You can use character classes like [a-zA-Z0-9] to match ranges of characters, and use quantifiers like + or * to match one or more occurrences.

 You can use groups and capturing groups to match and extract specific parts of a string.

 You can use anchors like ^ and $ to match the start and end of a string.

​