Test if text box is readonly

harry · May 16, 2004

<input type="text" name="actreqto" maxlength="20" value=""
onkeypress="changedDetails();" onchange="changedDetails();"
readonly="readonly">

Any ideas why doesn't this work?

alert(top.document.forms[0].actreqto.readonly);

displays 'undefined'

alert(top.document.forms[0].actreqto.readonly=='readonly');

displays 'false'

thanks

harry

ZER0 · May 16, 2004

<input type="text" name="actreqto" maxlength="20" value=""
onkeypress="changedDetails();" onchange="changedDetails();"
readonly="readonly">

Any ideas why doesn't this work?

alert(top.document.forms[0].actreqto.readonly);
alert(top.document.forms[0].actreqto.readOnly);

alert(top.document.forms[0].actreqto.readonly=='readonly');

readOnly is a boolean.

--
C'ya,
ZER0 :: coder.gfxer.webDesigner();

"When you have eliminated the impossible, whatever remains,
however improbable, must be the truth." (S.H.)

harry · May 17, 2004

Thanks for that Zero, was hoping to test if a key was pressed in a text box
that has readOnly set.

Any ideas why this returns false regardless of this setting?

function changedDetails()
{
alert(this.readOnly==true);
..
..
..
}

cheers

ZER0 said:
<input type="text" name="actreqto" maxlength="20" value=""
onkeypress="changedDetails();" onchange="changedDetails();"
readonly="readonly">

Any ideas why doesn't this work?

alert(top.document.forms[0].actreqto.readonly);
alert(top.document.forms[0].actreqto.readOnly);

alert(top.document.forms[0].actreqto.readonly=='readonly');

Click to expand...

readOnly is a boolean.

--
C'ya,
ZER0 :: coder.gfxer.webDesigner();

"When you have eliminated the impossible, whatever remains,
however improbable, must be the truth." (S.H.)

ZER0 · May 17, 2004

Thanks for that Zero, was hoping to test if a key was pressed in a text box
that has readOnly set.

Any ideas why this returns false regardless of this setting?

Yes. Because the "this" keyword in that context is NOT your HTML input
object.

Try this:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html>
<head>
<title></title>
</head>

<body>
<script type="text/javascript">
function changedDetails(sender){
if (sender.readOnly)
alert("the element "+sender.name+" is readonly");
else
alert("the element "+sender.name+" is editable");
}
</script>

<input type="text" name="actreqto" maxlength="20" value=""
onkeypress="changedDetails(this);" readonly="readonly" />

</body>
</html>

--
C'ya,
ZER0 :: coder.gfxer.webDesigner();

"Nei film americani, qualsiasi problema che venga considerato
sufficientemente catastrofico, puo' essere risolto facendo esplodere uno
o piu' ordigni nucleari" (ZER0 & Cosimo)

Now playing: "No more chances"

harry · May 17, 2004

Excellent! works perfectly - thanks again!

ZER0 said:
Yes. Because the "this" keyword in that context is NOT your HTML input
object.

Try this:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html>
<head>
<title></title>
</head>

<body>
<script type="text/javascript">
function changedDetails(sender){
if (sender.readOnly)
alert("the element "+sender.name+" is readonly");
else
alert("the element "+sender.name+" is editable");
}
</script>

<input type="text" name="actreqto" maxlength="20" value=""
onkeypress="changedDetails(this);" readonly="readonly" />

</body>
</html>

--
C'ya,
ZER0 :: coder.gfxer.webDesigner();

"Nei film americani, qualsiasi problema che venga considerato
sufficientemente catastrofico, puo' essere risolto facendo esplodere uno
o piu' ordigni nucleari" (ZER0 & Cosimo)

Now playing: "No more chances"

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Test if text box is readonly

harry

ZER0

harry

ZER0

harry

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