const regex = /(?!^)(http[^\\]+)\&/;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('(?!^)(http[^\\\\]+)\\&', '')
const str = `https://www.google.com/url?rct3Dj&sa3Dt&url3Dhttp://business.itbusinessnet.com/article/WorldStage-Supports-Massive-4K-Video-Mapping-at-Adobe-MAX-with-Christie-Boxer-4K-Projectors---4820052&ct3Dga&cd3DCAEYACoTOTEwNTAyMzI0OTkyNzU0OTI0MjIaMTBmYTYxYzBmZDFlN2RlZjpjb206ZW46VVM&usg3DAFQjCNE6oIhIxR6qRMBmLkHOJTKLvamLFg
What I need is:
http://business.itbusinessnet.com/article/WorldStage-Supports-Massive-4K-Video-Mapping-at-Adobe-MAX-with-Christie-Boxer-4K-Projectors---4820052`;
// Reset `lastIndex` if this regex is defined globally
// regex.lastIndex = 0;
let m;
if ((m = regex.exec(str)) !== null) {
// 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