<script type="text/javascript"> function addText(elname, wrap1, wrap2)
{
if (document.selection)
{ // for IE
var str = document.selection.createRange().text;
document.forms['inputform'].elements[elname].focus();
var sel = document.selection.createRange();
sel.text = wrap1 + str + wrap2;
return;
}
else if ((typeof document.forms['inputform'].elements[elname].selectionStart) != 'undefined')
{ // for Mozilla
var txtarea = document.forms['inputform'].elements[elname];
var selLength = txtarea.textLength;
var selStart = txtarea.selectionStart;
var selEnd = txtarea.selectionEnd;
var oldScrollTop = txtarea.scrollTop;
//if (selEnd == 1 || selEnd == 2)
//selEnd = selLength;
var s1 = (txtarea.value).substring(0,selStart);
var s2 = (txtarea.value).substring(selStart, selEnd)
var s3 = (txtarea.value).substring(selEnd, selLength);
txtarea.value = s1 + wrap1 + s2 + wrap2 + s3;
txtarea.selectionStart = s1.length;
txtarea.selectionEnd = s1.length + s2.length + wrap1.length + wrap2.length;
txtarea.scrollTop = oldScrollTop;
txtarea.focus();
return;
}
else
{
insertText(elname, wrap1 + wrap2);
}
}
<form action="" method="post" id="inputform"> <input type='button' value='B' onClick="addText('body', '<b>', '
</b>');">
<input type='button' value='P' onClick="addText('body', '<p>', '
</p>');">
<input type='button' value='H1' onClick="addText('body', '<h1>', '
</h1>');">
<input type='button' value='H2' onClick="addText('body', '<h2>', '
</h2>');">
<input type='button' value='H3' onClick="addText('body', '<h3>', '
</h3>');">
<input type='button' value='H4' onClick="addText('body', '<h4>', '
</h4>');">
nie pamiętam kto mi podał kod funkcji. Bardzo prosta funkcja w JS.