const regex = /(.+)(?:\/([\w\-\._]+\.js))(?:\?(.+))?/gm;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('(.+)(?:\\\/([\\w\\-\\._]+\\.js))(?:\\?(.+))?', 'gm')
const str = `leaflet-0.7.2.js
/leaflet-0.7.2.js
http://leafletjs.com/dist/leaflet.js
https://api.tiles.mapbox.com/mapbox.js/v1.6.3/mapbox.js
http://example.com/path/to/leaflet-0.7.2.js
http://example.com/path/to/mapbox-v1.6.2.js
http://leafletjs.com/dist/leaflet.js?v=123456&hide=true#section
`;
// 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