const regex = /^(?:(?:\+|00)33[\s.-]{0,3}(?:\(0\)[\s.-]{0,3})?|0)[1-9](?:(?:[\s.-]?\d{2}){4}|\d{2}(?:[\s.-]?\d{3}){2})$/gm;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('^(?:(?:\\+|00)33[\\s.-]{0,3}(?:\\(0\\)[\\s.-]{0,3})?|0)[1-9](?:(?:[\\s.-]?\\d{2}){4}|\\d{2}(?:[\\s.-]?\\d{3}){2})$', 'gm')
const str = `~ Accepted ~
0123456789
01 23 45 67 89
01.23.45.67.89
0123 45.67.89
0033 123-456-789
0033(0)123456789
+33-1.23.45.67.89
+33 - 123 456 789
+33(0) 123 456 789
+33 (0)123 45 67 89
+33 (0)1 2345-6789
+33(0) - 123456789
--------------------------------
~ Rejected ~
012345678
01234567890
0+123456789
(0)123456789
01 23 45 67 89
--------------------------------
~ Accepted but strange ~
+33.-.123456789
+33.-.(0)-.-123456789
01 23.45-67.89
`;
// Reset `lastIndex` if this regex is defined globally
// regex.lastIndex = 0;
let m;
while ((m = regex.exec(str)) !== null) {
// This is necessary to avoid infinite loops with zero-width matches
if (m.index === regex.lastIndex) {
regex.lastIndex++;
}
// The result can be accessed through the `m`-variable.
m.forEach((match, groupIndex) => {
console.log(`Found match, group ${groupIndex}: ${match}`);
});
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for JavaScript, please visit: https://developer.mozilla.org/en/docs/Web/JavaScript/Guide/Regular_Expressions