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Asked: 2026-05-31T20:02:34+00:00

I’m sending some HTML code back to an iframe using a java servlet and

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I’m sending some HTML code back to an iframe using a java servlet and an iframe on the js side. I’m actually just parsing some json from the HTML code by encasing it in a single <div>, using jQuery, but the string that gets sent back sometimes has added text.

If the text that gets added has a word with enclosing angle brackets, Firefox will automatically close the brackets for me, which I don’t want.

For example, if I send this:

<div>{"location":[],"columns":["<case expression>","headers"]}</div>

Firefox (and ONLY Firefox so far, not IE or chrome) will receive it as this:

<div>{"location":[],"columns":["<case expression>","headers"]}</case></div>

which screws up my parsing. I’m sending the text with the Content-Type of text/html, which I think might be causing the issue. I’ve tried Content-Type of application/json, but it won’t write html to the iframe unless I’m using the text/html.

Can someone help me with a solution? I’m willing to try a different method of sending the data if it’s not too extensive.

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1 Answer

  1. Editorial Team

    In order to keep the browser from interpreting HTML meta-characters as such, so that your “<” and “>” characters end up as part of the text, you can “escape” them as HTML entities. The “<” character is &lt; and the “>” is &gt;. People generally also quote the ampersand (“&”) as &amp; but I think browsers are generally a little smarter about that.

    Edit by OP for code solution:

    I used StringEscapeUtils.escapeHTML(), which worked perfectly. Thanks!

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