getSelectionStart on IE

[Dean A. Hoover]

I am quite new to javascript and am attempting
to write a function that will return the index
of the start of a selection, whether of not it
is "collapsed" . I've got it working if its not
collapsed, and I've also got a getSelectionEnd
function working. I did this primarily by searching
the internet and finding similar stuff, so you
may recognize some of it. But I did not find
anything that specifically addresses this
problem. If this has been covered before, I
apologize as I have not seen it. My code
follows.

Thanks
Dean Hoover

function getSelectionSta rt(input)
{
if (input.setSelec tionRange)
{
// Mozilla
return input.selection Start;
}
else if (document.selec tion)
{
// IE
var textRange = document.select ion.createRange ().duplicate();
var pos;

if (textRange.text .length > 0)
{
// selection is not collapsed
pos = input.value.ind exOf(textRange. text);
}
else
{
// selection is collapsed
pos = 0; // How do I compute this?
}

return pos;
}
else
{
return 0;
}
}

function getSelectionEnd (input)
{
if (input.setSelec tionRange)
{
// Mozilla
return input.selection End;
}
else if (document.selec tion)
{
// IE
var selectedRange = document.select ion.createRange ().duplicate();
selectedRange.m oveStart("chara cter", -input.value.len gth);
return selectedRange.t ext.length;
}
else
{
return 0;
}
}

[Dean A. Hoover]

Re: getSelectionSta rt on IE

OK, I figured out a way to do it. I just do
the same thing that I do for getSelectionEnd ,
if its collapsed. Does anyone know what needs
to be done to support other browsers (Opera,
for instance)?

Dean Hoover

Dean A. Hoover wrote:[color=blue]
> I am quite new to javascript and am attempting
> to write a function that will return the index
> of the start of a selection, whether of not it
> is "collapsed" . I've got it working if its not
> collapsed, and I've also got a getSelectionEnd
> function working. I did this primarily by searching
> the internet and finding similar stuff, so you
> may recognize some of it. But I did not find
> anything that specifically addresses this
> problem. If this has been covered before, I
> apologize as I have not seen it. My code
> follows.
>
> Thanks
> Dean Hoover
>
> function getSelectionSta rt(input)
> {
> if (input.setSelec tionRange)
> {
> // Mozilla
> return input.selection Start;
> }
> else if (document.selec tion)
> {
> // IE
> var textRange = document.select ion.createRange ().duplicate();
> var pos;
>
> if (textRange.text .length > 0)
> {
> // selection is not collapsed
> pos = input.value.ind exOf(textRange. text);
> }
> else
> {
> // selection is collapsed
> pos = 0; // How do I compute this?
> }
>
> return pos;
> }
> else
> {
> return 0;
> }
> }
>
> function getSelectionEnd (input)
> {
> if (input.setSelec tionRange)
> {
> // Mozilla
> return input.selection End;
> }
> else if (document.selec tion)
> {
> // IE
> var selectedRange = document.select ion.createRange ().duplicate();
> selectedRange.m oveStart("chara cter", -input.value.len gth);
> return selectedRange.t ext.length;
> }
> else
> {
> return 0;
> }
> }
>[/color]