const regex = /(?<=xmlUrl=")[^"]*/gi;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('(?<=xmlUrl=")[^"]*', 'gi')
const str = `<outline type="rss" text="Tech Viral" title="Tech Viral" xmlUrl="http://feeds.feedburner.com/TechViral" htmlUrl="https://techviral.net"/>
<outline type="rss" text="The Verge" title="The Verge" xmlUrl="http://www.theverge.com/rss/full.xml" htmlUrl="https://www.theverge.com/"/>
<outline type="rss" text="Joystiq" title="Joystiq" xmlUrl="http://www.joystiq.com/rss.xml" htmlUrl="https://www.engadget.com/rss.xml"/>
<outline type="rss" text="BGR" title="BGR" xmlUrl="http://www.boygeniusreport.com/feed/" htmlUrl="http://bgr.com"/>`;
// 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