const regex = /^<(?:([A-Za-z0-9][A-Za-z0-9]*)\b[^>]*>(?:.*?)<\/\1>|[A-Za-z0-9][A-Za-z0-9]*\b[^>]*\/>)$/gm;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('^<(?:([A-Za-z0-9][A-Za-z0-9]*)\\b[^>]*>(?:.*?)<\\\/\\1>|[A-Za-z0-9][A-Za-z0-9]*\\b[^>]*\\\/>)$', 'gm')
const str = `<strong>strong</strong>
<hr />
<div>element</section>
<span class="blue-span" id="spnner">span this!</span>`;
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