Check if string is enclosed in single quotes Javascript

Question

// 'Apple' : valid
// 'Apple : Invalid
// Apple : Invalid

if(str.indexOf('\'') > -1 && str.indexOf('"') > -1){
   // do something
}

This will detect if the string contains single and double quotes.

How to check if string starts and ends with a single quote. (Regexp)?

Answer 1

if(str[0] == "'" && str[str.length - 1] == "'"){
   // do something
}

Answer 2

/^'.*'$/.test(str)

Regex for starts and ends with a single quote.