Js regex for UAE Mobile Number

Question

Validate UAE mobile number using js regex. Mobile No- +971 XXXXXXXXX (+971 and 9 digits after it.)

Answer 1

 The snippet below works for me:
 let mystring = '[phone]';
 let reg = /\+971([\d]{9})/;
 let matches = mystring.match(reg);
 if (matches.length>0) {
 console.log('the number if valid');
 }