const regex = /<section.*id="section[\d]*"[\s\S]*?<\/section>/gm;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('<section.*id="section[\\d]*"[\\s\\S]*?<\\\/section>', 'gm')
const str = `<!DOCTYPE html>
<html lang="en">
<head>
<title>Whatever</title>
</head>
<body>
<section class="all-classes" id="section1-do-not-remove-section">
content2
content
</section>
<section class="all-classes" id="section2">
content
content2
</section>
</body>
<section class="all-classes" id="section3">
content
<div class="all-classes" id="section4">
anything
whatever
</div>
</section>
<section class="all-classes" id="section5-do-not-remove-section">
content
</section>
<section class="all-classes" id="section6">
content
</section>
<section class="all-classes" id="section7">
content
</section>
`;
// 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