const regex = /(\b([0-9]{10}|[0-9\s]{12})\b)/gm;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('(\\b([0-9]{10}|[0-9\\s]{12})\\b)', 'gm')
const str = `KINDLY AUTH FOR FUNDS
ACC 1469007967 (Number needs to be extracted)
KINDLY AUTH FOR FUNDS
ACC 146900796723423 **(Want to ignore this number)**
ACC NUMBER -1186 057 378 **(the number after - sign needs to be extracted)**
**1162792833** CHQ:104-R8856.00 AND (The number in ** needs to be extracted)`;
// 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