const regex = /\[([^\]]+)\]\(([^"“”]+)(?: [\"|\“]([^\"“”]+)[\"|\”])?\)|(\b(?:[a-z][\w-]+:(?:\/{1,3}|[a-z0-9%])|www\d{0,3}[.]|[a-z0-9.\-]+[.][a-z]{2,4}\/?)(?:[^\s()<>]+|\(([^\s()<>]+|(\([^\s()<>]+\)))*\)){0,}(?:\(([^\s()<>]+|(\([^\s()<>]+\)))*\)|[^\s\!()\[\]{};:\'\"\.\,<>?«»“”‘’]){0,})/g;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('\\[([^\\]]+)\\]\\(([^"“”]+)(?: [\\"|\\“]([^\\"“”]+)[\\"|\\”])?\\)|(\\b(?:[a-z][\\w-]+:(?:\\\/{1,3}|[a-z0-9%])|www\\d{0,3}[.]|[a-z0-9.\\-]+[.][a-z]{2,4}\\\/?)(?:[^\\s()<>]+|\\(([^\\s()<>]+|(\\([^\\s()<>]+\\)))*\\)){0,}(?:\\(([^\\s()<>]+|(\\([^\\s()<>]+\\)))*\\)|[^\\s\\!()\\[\\]{};:\\\'\\"\\.\\,<>?«»“”‘’]){0,})', 'g')
const str = `[some text](http://google.com "title")
[some text](http://google.com)
http://google.com`;
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