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<div>If there was no error, you could see an image below. But it's a broken link!</div> <br /> <div id="imageContainer" style="background-color: grey;"></div> <script> const img = new Image(); const imageContainer = document.getElementById('imageContainer'); img.onerror = function() { imageContainer.innerHTML = 'An error happened.'; }; img.onload = function() { imageContainer.appendChild(img); }; img.src = 'https://www.w3docs.com/build/images/broken-link.png'; </script>