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Editorial Team
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Asked: 2026-05-13T05:28:19+00:00

I have following JS code (stripped to minimal size where problem still exists) <html>

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I have following JS code (stripped to minimal size where problem still exists)

<html>
<head>
<script type="text/javascript" src="jquery.js"></script>
</head>
<body>
<div id="debug">this is <em>test</em></div>
<script type="text/javascript">
    var string1 = $('#debug').html();
    var string2 = string1.replace(/<em>/g, '<strong>');
    string2 = string2.replace(/<\/em>/g, '</strong>');
    $('#debug').html( string2 );
</script>
</body>
</html>

In Firefox everything works and <em> tags are replaced with <strong>.

But in Opera <em>’s are stay in place. Furthermore, any other HTML tags are not captured by regexps at all.

Is there any way to fix this behaviour? I need not only to replace tags, but to parse their content too (href attributes for example).

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1 Answer

  1. Editorial Team

    Opera returns tags as uppercase, e.g. <EM>. You need to change your regular expressions to work case-insensitively:

    var string2 = string1.replace(/<em>/gi, '<strong>');
string2 = string2.replace(/<\/em>/gi, '</strong>');
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