Octal escape sequences are not allowed:

const str = `        Name: FirstName LastName
        123-45-6789
        987-65-4321
        Address: 1234 abc Street, Apt. 567, Ricefield, ILE 602701
        Phone: (123) 456-7890
        t
        Email: [email protected]
        URL: https://www.example.com
        f 
        IP: 192.168.1.1
        Date: 01/01/2023
        Price: $99.99
        r 
        Color: Red, Blue, Green, Yellow
        Mixed: abc123XYZ987
         v
        141pple x42anana u0063herry
        
`;
 let regexOctal = /141/;
 console.log("regexOctal.exec(str) : ", regexOctal.exec(str));

error at : 141pple

i wanted to see how octal , hex and unicode is worked with regex to search

i tried using ${} in Template Strings and also in new variable without Template Strings but still error
1)

const str = `        Name: FirstName LastName
        123-45-6789
        987-65-4321
        Address: 1234 abc Street, Apt. 567, Ricefield, ILE 602701
        Phone: (123) 456-7890
        t
        Email: [email protected]
        URL: https://www.example.com
        f 
        IP: 192.168.1.1
        Date: 01/01/2023
        Price: $99.99
        r 
        Color: Red, Blue, Green, Yellow
        Mixed: abc123XYZ987
         v
        ${"141"}pple x42anana u0063herry
`;

2)const newStr = "141pple x42anana u0063herry";