Formatting Specified String In Textarea Field

Nov 8, 2006

I have such a text

<input type="text" name="search_txt" value="">
<textarea name="txt_m">
My hobby is bicycle.
My hobby is driving a car.
</textarea>

I would like to bold and color a specified text
in input field search_txt for instance "hobby" string.

How to do that in JS?

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