Add text before highlighted text in textarea (HTML/JavaScript)

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<textarea name="text1"></textarea>
<input type="button" value="Add Text" onClick="addText1();">

Say I have a text area as the one above, and a button.
I want to highlight text within the text area, and at the press of a button it adds text infront of the selection.

Is this possible?

I've researched a bit online and this is the closest thing I found: Link

Thanks,
L.

Posted 13-Apr-15 4:29am

LighthouseCall

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jgakenhe · Answer 1 · 2015-04-13T07:44:00

Yes you can. See below, where I have grabbed the textbox value and concatenates it with an additional value.

XML

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
 <head>
  <title>Test</title>

<script type="text/javascript">
function addText1()
{
    document.test.text1.value = document.test.text1.value + " THIS IS EXTRA! "
}
</script>
 </head>

 <body>
 <form name="test">
  <textarea name="text1"></textarea>
    <input type="button" value="Add Text" onClick="addText1();">
</form>
 </body>
</html>