Web Development

Re: need Javascript show/hide help

30-Jun-10 10:10

I have a simple syntax question... if you need more background I will post it.

Here is how it is called.

<input type="button" value="Go" onClick="goListGroup(document.listmenu0.firstlevel, document.listmenu0.secondlevel)">

function ShowContent(d) {
	document.getElementById(d).style.display = "block";
}

function goListGroup(){
	for (i=arguments.length-1;i>=0; i--){
		if (arguments[i].selectedIndex!=-1){
			var selectedOptionvalue=arguments[i].options[arguments[i].selectedIndex].value
			ShowContent(selectedOptionvalue); return true;
			break
		}
	}
}

This does nothing and I need to know what I did wrong. I am beginning by wanting to show the correct

. and eventually show the contents into a all purpose

and hide the previous content, but I am at the end of my knowledge here. Can anyone help?

NeverHeardOfMe30-Jun-10 14:00

NeverHeardOfMe

30-Jun-10 14:00

I find the best tool for finding the root of Javascript problems is to run my code in Firefox with the "Error console" (Tools menu) open. (If IE's "Developer Tools" menu option has anything even half as helpful/good as that I've yet to find it.)

Getting used to php

Bram van Kampen29-Jun-10 15:33

Bram van Kampen

29-Jun-10 15:33

Hi,
Getting to familiarise myself to the PHP Language.
I am familiar with MFC/CPP,etc. My questions are now:-

-How do I Debug a Script. Is there a Debugger of kinds available to see what happens, and where I can set Breakpoints. I currently use 'AlleyCode' to view the scripts written by someone else.

- I Note that the language does not mention Virtual Functions. (So I would assume that there is no VTable Hidden Member.) Does that mean that I can Save and Retrieve a PHP Class (binary)Safely to and from a File using fread() and fwrite().

- Is there a way of Loading a DLL and Calling DLL Functions from PHP Code. If so, what are the Calling Conventions.

The List is much longer, but the above are for now the important ones.

Regards'

Smile | :)

Bram van Kampen

Re: Getting used to php

Dr.Walt Fair, PE29-Jun-10 17:08

Dr.Walt Fair, PE

29-Jun-10 17:08

For debugging, I usually just put in echo statements and watch what happens. I've also used the technique of logging things to a file on the server to see what happens during execution of a PHP script.

I'm not sure about your other questions. Since PHP is an interpreted scripting language, I'm not sure that saving a binary representation of classes makes much sense, but maybe someone else knows better than me. All my PHP work has been deployed on Linux boxes, so Windows DLL's don't make much sense there, either.

I haven't tried all the PHP tools, but there's a list that you might find useful at the PHP Tools[^] web site.

CQ de W5ALT

Walt Fair, Jr., P. E.
Comport Computing
Specializing in Technical Engineering Software

Re: Getting used to php

Graham Breach29-Jun-10 21:10

Graham Breach

29-Jun-10 21:10

For debugging I generally just dump variables to the page or a log using print_r[^]. Set the error_reporting[^] level to something useful and turn on the display_errors[^] option for development so you can see warnings and errors.

You can save and load class data using serialize[^] and unserialize[^]. Serialized data looks a lot like JSON.

For accessing a DLL there is W32api[^] - I've never used it myself though.

Need Help with 3 tabbed menu

TreyUF29-Jun-10 9:42

29-Jun-10 9:42

I designing a Chained Menu using 3 list boxes instead of combo boxes. I have the basic idea on how to do the chained menu, but on the list boxes I can not figure out how to resize the box and fonts to my specific wants. I also want to get rid of the vertical scroll bar. I know I have to create a customized list box, however I am at a loss on how and I can only use javascript (.js) or html.

anyone have an idea?

R. Giskard Reventlov30-Jun-10 0:50

30-Jun-10 0:50

TreyUF wrote:
I can not figure out how to resize the box and fonts to my specific wants

CSS comes to mind.

"If you think it's expensive to hire a professional to do the job, wait until you hire an amateur." Red Adair.
nils illegitimus carborundum

me, me, me

TreyUF30-Jun-10 2:35

30-Jun-10 2:35

How in CSS can I keep the vertical scroll bar from showing up in a list box and resize it?

R. Giskard Reventlov30-Jun-10 3:07

30-Jun-10 3:07

Start here: Transparent or hide scrollbar[^]

"If you think it's expensive to hire a professional to do the job, wait until you hire an amateur." Red Adair.
nils illegitimus carborundum

me, me, me

TreyUF30-Jun-10 4:13

30-Jun-10 4:13

Ok, I have gotten some idea how to do it, but I can not completely hide the scroll bar over all browsers. After further research, that method is for IE and has issues on other browsers.

Again I am using a Listbox or a box and want to hide the or even remove the scroll bar completely.

R. Giskard Reventlov30-Jun-10 4:17

30-Jun-10 4:17

Why not use a div instead? You can set the height, width, etc, to suit.

"If you think it's expensive to hire a professional to do the job, wait until you hire an amateur." Red Adair.
nils illegitimus carborundum

me, me, me

TreyUF30-Jun-10 4:34

30-Jun-10 4:34

Use

instead of the list box? I could, but the is that I am using a chain menu to help students navigate to where they want instead of have 30 links or so. One list box, they would select their operating system. Then the next list box comes alive and then they select their version. Finally the last box comes alive and then according to what they click there, it would show the information below the table (which is holding the chained list boxes neatly).

I only want the scroll bar to show on the selections that are needed. Will

work in this capacity? or is there a better way of getting this done?

R. Giskard Reventlov30-Jun-10 4:40

30-Jun-10 4:40

I think you're getting hung up on scrollbars: why not use drop down lists instead of listboxes?

"If you think it's expensive to hire a professional to do the job, wait until you hire an amateur." Red Adair.
nils illegitimus carborundum

me, me, me

TreyUF30-Jun-10 4:45

Div tags visble and hidden

30-Jun-10 4:45

well ........... I kinda wanted all the options to be visible and kinda liked the idea <pouts> I already have the chained menu set up as drop down at the moment.

However, with that said .... is it possible to accomplish what I was looking for?

offroaderdan28-Jun-10 6:38

offroaderdan

28-Jun-10 6:38

Experts,

I have a div tag i have assigned with 3 pictures in it. lets call it

now what i would like to happen is on mouse hover on a separate button this div tag is displayed (visible), and on mouse out it becomes invisible.

Any ideas of how this can be done.

I am sorry if this is a stupidly easy question to answer, i am use to coding in vb.net and thought i would have a go at a different language Smile | :)

as in vb.net i wold do groupbox.visible=false.

Thanks

Dan

Tips/Tricks|Brainbench certifications|Facebook|Twitter

thatraja28-Jun-10 9:51

thatraja

28-Jun-10 9:51

<body>
<script  type="text/javascript">
function mousemove()
{
document.getElementById("divTest").style.visibility = "visible";
}

function mouseout()
{
document.getElementById("divTest").style.visibility = "hidden";
}
</script>
     <form id="form1" runat="server">
    <div id="divTest">Test DIV Content</div>
    <div>
    <input type="button" runat="server" onmouseout="mouseout()" onmousemove="mousemove()" id="btnTest" value="Mouse Move/Mouse Out" style="cursor:pointer;"/>
    </div>
    </form>
</body>

Mate you should learn javascript must in web development. Happy coding

thatraja

NeverHeardOfMe28-Jun-10 11:22

NeverHeardOfMe

28-Jun-10 11:22

If you want your code to have better cross-browser compatibility, you should use something more like this:

<html>
<head>
<title></title>
<script type="text/javascript">
function mouseover()
{
document.getElementById("divTest").style.display = "inline";
}

function mouseout()
{
document.getElementById("divTest").style.display = "none";
}
</script>
</head>
<body>
<form id="form1" >
<div>
<input type="button" onmouseout="mouseout()" onmouseover="mouseover()" id="btnTest" value="Mouse Over/Mouse Out" style="cursor:pointer;" />
</div>
<div id="divTest" style="display:none;">Test DIV Content</div>
</form>
</body>
</html>

offroaderdan29-Jun-10 0:05

offroaderdan

29-Jun-10 0:05

Thanks,
This works, however i have some button images i would like to use, i have tried as best to use your code and incorprate it into the image i am using but hit a brick wall.

i used

<img src="images/MainScreen/Welcom.jpg" name="Welcome" width="146" height="43" onClick="mouseout()">

but his code doesn't seem to be doing anything, unlike your code above. Any help would be great

Cheers

Dan