<!DOCTYPE html> <html class="reftest-wait"> <meta charset="utf-8"> <title>CSS Overflow: Dynamically changing contents of a -webkit-line-clamp affected element</title> <link rel="author" title="Cameron McCormack" href="mailto:cam@mcc.id.au"> <link rel="help" href="https://drafts.csswg.org/css-overflow-3/#webkit-line-clamp"> <link rel="match" href="reference/webkit-line-clamp-023-ref.html"> <meta name="assert" content="Dynamically changing contents of a -webkit-line-clamp element so that it matches the specified number of lines should stop clamping."> <style> .clamp { display: -webkit-box; -webkit-box-orient: vertical; -webkit-line-clamp: 3; font: 16px / 32px serif; white-space: pre; padding: 0 4px; background-color: yellow; overflow: hidden; /* can be removed once implementations update their old -webkit-line-clamp implementations */ } </style> <div class="clamp">Line 1 Line 2 Line 3 Line 4 Line 5</div> <p>Following content.</p> <script> requestAnimationFrame(() => requestAnimationFrame(() => { document.querySelector(".clamp").textContent = `Line 1 Line 2 Line 3`; document.documentElement.className = ""; })); </script>