Regular expression for all printable characters in JavaScript

Question

Looking for a regular expression for that validates all printable characters. The regex needs to be used in JavaScript only. I have gone through this post but it mostly talk

Answer 1

To validate a string only consists of printable ASCII characters, use a simple regex like

/^[ -~]+$/

It matches

• ^ - the start of string anchor
• [ -~]+ - one or more (due to + quantifier) characters that are within a range from space till a tilde in the ASCII table:

- $ - end of string anchor

For Unicode printable chars, use \PC Unicode category (matching any char but a control char) from XRegExp, as has already been mentioned:

^\PC+$

See regex demos:

// ASCII only
var ascii_print_rx = /^[ -~]+$/;
console.log(ascii_print_rx.test("It's all right.")); // true
console.log(ascii_print_rx.test('\f ')); // false, \f is an ASCII form feed char
console.log(ascii_print_rx.test("demásiado tarde")); // false, no Unicode printable char support
// Unicode support
console.log(XRegExp.test('demásiado tarde', XRegExp("^\\PC+$"))); // true
console.log(XRegExp.test('‌ ', XRegExp("^\\PC+$"))); // false, \u200C is a Unicode zero-width joiner
console.log(XRegExp.test('\f ', XRegExp("^\\PC+$"))); // false, \f is an ASCII form feed char