Topic: Some questions on the form editor javascript?
I have never really put time on coding javascript...
But I kind of need a basic bbcode editor, and since punbb is open source, why not using it's javascript?
so... we have this...
<script type="text/javascript">
<!--
function insert_text(open, close)
{
msgfield = (document.all) ? document.all.req_message : document.forms['post']['req_message'];
// IE support
if (document.selection && document.selection.createRange)
{
msgfield.focus();
sel = document.selection.createRange();
sel.text = open + sel.text + close;
msgfield.focus();
}
// Moz support
else if (msgfield.selectionStart || msgfield.selectionStart == '0')
{
var startPos = msgfield.selectionStart;
var endPos = msgfield.selectionEnd;
msgfield.value = msgfield.value.substring(0, startPos) + open + msgfield.value.substring(startPos, endPos) + close + msgfield.value.substring(endPos, msgfield.value.length);
msgfield.selectionStart = msgfield.selectionEnd = endPos + open.length + close.length;
msgfield.focus();
}
// Fallback support for other browsers
else
{
msgfield.value += open + close;
msgfield.focus();
}
return;
}
-->
</script>Now... I am not familiar with browsers DOM implementation, nor with DOM itself, but he above code looks at least tricky, I guess that's how all javascript ends up being.
Here's my questions dump:
-what's the first test for?, in which situation wouldn't document.all.req_message be defined and what does document.forms['post']['req_message'] represent?
-do the browsers call different things to the form objects? Like... can anybody explain me in detail the browser test conditions?