const regex = /(?x)
\d+ # at least one digit
\. # a period
\s # a space
[^\d]++ # not a digit, 1 or more of them
(?=\d) # until we see a digit ahead
/g;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('(?x)
\\d+ # at least one digit
\\. # a period
\\s # a space
[^\\d]++ # not a digit, 1 or more of them
(?=\\d) # until we see a digit ahead
', 'g')
const str = ` 1. Which is your primary browser for development 2. Which of the following technologies have you made use of? 2. Which of the following technologies have you made use of? 3. How old `;
// 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