const regex = /^((091|\+91)?|\((091|\+91)?\)|(91)?|\(91\)|0)? ?[7-9][0-9]{9}$/gm;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('^((091|\\+91)?|\\((091|\\+91)?\\)|(91)?|\\(91\\)|0)? ?[7-9][0-9]{9}$', 'gm')
const str = `+91 7990989898
91 7990989898
091 7990989898
0 7990989898
(0+91)7990989898
+7990989898
0(+91) 7990989898
0(91) 7990989898
7990989898
+917990989898
917990989898
07990989898
0917990989898
(91)7990989898
(+91)7990989898
(91) 7990989898
(+91) 7990989898
(091) 7990989898
(091)7990989898
0+91 7990989898`;
// 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