Chars allowed between src and = in img tag

5

5

5

<script>0x0D
window.onerror = () => true; 0x0D
</script>0x0D

<img src$[chr]=data:text/plain, id="testImg">

const img = document.getElementById('testImg');0x0D
if (img.hasAttribute('src') && img.getAttribute('src') === 'data:text/plain,') {0x0D
    log($[i]);0x0D
}