const regex = /[A-Za-z](?:\s\d+|\s?\w+[,.-]+)*\s[^\s]+[.\s]*$/mg;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('[A-Za-z](?:\\s\\d+|\\s?\\w+[,.-]+)*\\s[^\\s]+[.\\s]*$', 'mg')
const str = `I fell down the stairs on June 30th, 1962.
There are 123 boxes on up the hill, says that 612 guy.
The lazy brown fox is not a dog.
This sentence will work .
That one finally works... yay!
How do you spell-- regex?`;
// 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