const regex = new RegExp('<div id=""target""((?\\'nested\\'<div)|</div(?\\'-nested\\')|[\\w\\W]*?)*</div>', 'gm')
const str = `<!DOCTYPE html>
<html>
<head>
<title>someTitle</title>
</head>
<body>
<div class="outer">
<h1>SomeHeader</h1>
<div id="target">
<h2>anotherHeader</h2>
<div id="child">
<div id="grand-child">
<h4>HelloWorld</h4>
</div>
</div>
</div>
</div>
</body>
</html>`;
// 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