const regex = /(?(DEFINE)
(?<int>
(?:
\G|
(?!\n)
)
\s*\b\d{1,5}\s*
)
(?<timepart>
(
s|
m|
h|
d
)
\b
)
)
^
((?&int))
((?&timepart))
(?<string>.+)
$/img;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('(?(DEFINE)
(?<int>
(?:
\\G|
(?!\\n)
)
\\s*\\b\\d{1,5}\\s*
)
(?<timepart>
(
s|
m|
h|
d
)
\\b
)
)
^
((?&int))
((?&timepart))
(?<string>.+)
$', 'img')
const str = `2min baz
12 mins foo
1 hour 20 mins remind this
1sec
5 hours
1 sec foo
3 minutes 4 seconds
3333 sec do
1 hrs 20 mins 5 seconds remind this
2 days 3 hrs 20 mins 5 seconds remind this
foo 2sec bar //fail
2 s hi
3 m foo
3m bar
2d baz
9 h foobar`;
// 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