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    copied!<p>Here is a question that answers your problem about getting the highlighting text <a href="https://stackoverflow.com/questions/717224/how-to-get-selected-text-in-textarea">How to get selected text in textarea?</a></p> <p>About making the selected text bold you would need to use html tags or something like bbcode and parse it to html when you print it on to a page.</p> <p>EDIT: <a href="http://laboratorium.0xab.cd/jquery/fieldselection/0.2.3-test/test.html" rel="nofollow noreferrer">Here is a page that shows the jquery plugin "fieldselection" in action.</a></p> <p>EDIT 2: Here is an example of how I would've done this: <a href="http://jsfiddle.net/KscJk/9/" rel="nofollow noreferrer">jsfiddle link</a></p> <p><strong>The HTML:</strong></p> <pre><code>&lt;input id="bold" type="button" value="B" /&gt; &lt;br /&gt; &lt;textarea id="editor"&gt;&lt;/textarea&gt; &lt;div id="resultAsHtml"&gt;&lt;/div&gt; &lt;br /&gt; &lt;div id="resultAsText"&gt;&lt;/div&gt; </code></pre> <p><strong>The javascript (jquery) code:</strong></p> <pre><code>$(document).ready(function() { $("#editor").keyup(Update); function Update(){ var text = $(this).val(); var result = ParseToHtml(text); $("#resultAsHtml").html(result); $("#resultAsText").text(result); } $("#bold").click(function(){ var range = $("#editor").getSelection(); var textToReplaceWith = "[b]"+ range.text + "[/b]"; $("#editor").replaceSelection(textToReplaceWith , true); var text = $("#editor").val(); var result = ParseToHtml(text); $("#resultAsHtml").html(result); $("#resultAsText").text(result); }); function ParseToHtml(text) { text = text.replace("[b]", "&lt;b&gt;"); text = text.replace("[/b]", "&lt;/b&gt;"); text = text.replace(" ","&amp;nbsp;"); text = text.replace("\n","&lt;/br&gt;"); return text; } $("#bold").replaceSelection("[b]" + $("#editor").getSelection() + "[/b]", true); }); </code></pre>
 

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