delete/make invisible button?

[Geoff Cox]

Hello,

I have a button which I wish to be invisible at the end of an
application. How do delete it or simply make it invisible?

Cheers

Geoff

 

[Martin Honnen]

I have a button which I wish to be invisible at the end of an
application. How do delete it or simply make it invisible?

In the DOM as implemented in IE 5 and later, Mozilla, Netscape 6 and
later, Opera 7 and later and other modern browsers you can remove any
node by calling removeChild on its parent node e.g.
node.parentNode.removeChild(node);
thus if you have a variable button with a reference to the button
element you can do
if (button.parentNode && button.parentNode.removeChild) {
button.parentNode.removeChild(button);
}

 

[Geoff Cox]

In the DOM as implemented in IE 5 and later, Mozilla, Netscape 6 and
later, Opera 7 and later and other modern browsers you can remove any
node by calling removeChild on its parent node e.g.
node.parentNode.removeChild(node);
thus if you have a variable button with a reference to the button
element you can do
if (button.parentNode && button.parentNode.removeChild) {
button.parentNode.removeChild(button);
}

Martin,

Can you just explain how that would apply to my button which is
created as part of the creation of a table ..

document.write("<input type='button' value='Next'
onclick='next_question()' />");

After the "Next" button is clicked at the end of the exercise and the
results are emailed to me I would like the button to become invisible
so that the user is unable to press it again.

Cheers

Geoff

 

[Martin Honnen]

Geoff Cox wrote:

Can you just explain how that would apply to my button which is
created as part of the creation of a table ..

document.write("<input type='button' value='Next'
onclick='next_question()' />");

Well pass the button to your function e.g.

<input type="button" onclick="next_question(this);"

and then in the function declaration you use a formal parameter

function next_question (button) {

and then wherever in the function you want to remove the button you use
the suggested code e.g.

if (button.parentNode && button.parentNode.removeChild) {
button.parentNode.removeChild(button);
}

 

[Geoff Cox]

Well pass the button to your function e.g.

<input type="button" onclick="next_question(this);"

and then in the function declaration you use a formal parameter

function next_question (button) {

and then wherever in the function you want to remove the button you use
the suggested code e.g.

if (button.parentNode && button.parentNode.removeChild) {
button.parentNode.removeChild(button);
}

Martin,

Brilliant! Thanks that works fine - could you just say a word ot two
about the use of "this"?

Cheers

Geoff

 

[RobG]

Geoff Cox wrote:
[...]

Martin,

Brilliant! Thanks that works fine - could you just say a word ot two
about the use of "this"?

I think Mike Winter gets it mostly spot on here:

<URL:http://groups.google.com/group/comp...avascript+class+model?&hl=en#2065870c97d74b50>

 

[Geoff Cox]

Geoff Cox wrote:
[...]

Martin,

Brilliant! Thanks that works fine - could you just say a word ot two
about the use of "this"?

I think Mike Winter gets it mostly spot on here:

<URL:http://groups.google.com/group/comp...avascript+class+model?&hl=en#2065870c97d74b50>

Thanks Rob - will follow up on this - by the way one of the longest
URL's I've seen!

How do you get the link to the posting?

Cheers

Geoff

 

[RobG]

Geoff Cox wrote:
[...]

Martin,

Brilliant! Thanks that works fine - could you just say a word ot two
about the use of "this"?

I think Mike Winter gets it mostly spot on here:

<URL:http://groups.google.com/group/comp...avascript+class+model?&hl=en#2065870c97d74b50>

Thanks Rob - will follow up on this - by the way one of the longest
URL's I've seen!

Google groups links are long, but I think some references to MS
developer documentation are longer ;-)

How do you get the link to the posting?

Enclose the link in <URL: > and your news reader does the rest.

Incidentally, if you use '-- ' (that's dash dash space) on a line by
itself before your signature, those who reply to your posts with a
newsreader will have your signature automatically trimmed (which is
thought to be a good thing in general).