const regex = new RegExp('\\d*\\.?\\d+(?:/\\d*\\.?\\d+)*(?:\\s+(?:and|to)\\s+\\d*\\.?\\d+(?:/\\d*\\.?\\d+)*)*', 'gm')
const str = `He is 1 and 1/2 years old. He is .5 years old and he is 5 years old. He is between 9 to 11 or 9 to 9 and 1/2. He was born 11/12/20
Score 1 and 2 sometimes, often 1 and 1/2, or 2.5 or 3 and 1/3.`;
// 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