WebDeveloper.com - JavaScript

The meaning of "$$" when assigning a value in JS?

choistella — Sat, 21 Nov 2009 03:12:19 GMT

1. What's the meaning of "$$" when assigning a value in this code?

2. In what case the "$$" is used and why it's used instead of "$"?

Here is the code :

function sel_mul_dropCount(title_id,checkbox_class){
var sel_mul_title=$(title_id)
var oSum=0;
var oMessage="";
var oInputs=$$("input."+checkbox_class);
for(var i=0;i if(oInputs[i].checked)
oSum++;
}
if(oSum==0)
oMessage="None"
else if(oSum==oInputs.length)
oMessage="All"
else
oMessage=oSum
if(sel_mul_title)
sel_mul_title.innerHTML=oMessage+" selected";
}

help me plz

Javascript function and Alert help

Origin — Sat, 21 Nov 2009 02:31:23 GMT

Hello, I have been wracking my brain trying to create a program that will randomly get an integer from 1 to 1000 and it will prompt you to guess what the integer is.

x = random integer
guess = users guess

The result is if you guess to high, your told that your guess is too high ( guess > x ), if your low, your told that your too low ( guess < x ). If your correct then your congratulated. (guess = x)

Now where the problem comes in, is i am trying to display the result in an Alert screen. Here is my code:

function Play()
{
var GuessingField = document.getElementById("guessing");

if(GuessingField.value = (GuessingField.value != x) )
{
GuessingField.value = (GuessingField.value > x);
alert("You are too high: ")
}
else if (GuessingField.value = (GuessingField.value < x) )

{
GuessingField.value = (GuessingField.value < x);
alert("You are too low: " )

}
else if (GuessingField.value = (GuessingField.value = x) )
{
GuessingField.value = (GuessingField.value = x);
alert("You are correct ")

else alert("Try again ")

Now based on my code, if(GuessingField.value = (GuessingField.value != x) ) means this will be a true and false situation, which i need multiple situations for if the guess is greater, less, or correct.

My outcome is if the guess > x, it will say it's too high. if it's too low, it still says too high, and if its correct then it will say its correct. But i believe it's already defined at

if(GuessingField.value = (GuessingField.value != x) )

Any suggestions on what i should do?

Help on expand/collapse script

WT2008 — Sat, 21 Nov 2009 02:10:31 GMT

I'm using the attached script to expand/collapse part of the page content.

My problem is that if I want to display an image instead of the [+] or [-] it works ok in every browser except Internet Explorer (any version).

I put the img src like this:

HTML Code:

if (lText == '"images/plus.gif">') 

         { 

         link.innerHTML = '"images/minus.gif">'; d.style.display = 'block'; 

 }

 else

         { 

         link.innerHTML = '"images/plus.gif">'; d.style.display = 'none'; }

I'm not a programmer, I'm a web designer, I appreciate if someone help me.

Thanks

This is the complete script code.

HTML Code:

var ie8 = false;

if(document.all)

{

 ie8 = true;

        }

function getObject(id)

{ 

        if (ie8) 

        { return document.all[id];

        } 

        else 

        { 

                return document.getElementById(id); 

                } 

                }

function toggle(link, divId) 

        { var lText = link.innerHTML; var d = getObject(divId);

 if (lText == '+') 

         { 

         link.innerHTML = '-'; d.style.display = 'block'; 

 }

 else

         { 

         link.innerHTML = '+'; d.style.display = 'none'; } 

 }

Can't figure out how to make these (supposedly) small and simple programs

mvbf987 — Sat, 21 Nov 2009 02:09:15 GMT

I'm brand new at making JavaScript programs. I'm taking my first class and am already far behind because our teacher is absolutely HORRIBLE and doesn't teach us anything. I have about 6 programs I have to make and I'm about to give up.

The only one I have any code for is a program where we have to create a drop-down box and have it display one of 3 picture choices.

I've gotten as far as creating the drop-down box but I don't know what to do to get it to display the pictures.

This is the code I have for this program:

Code:

















Project6

















        This program will display different pictures.

Picture1, Picture2, and Picture 3 are the names of the pics.
What I don't know is what functions or actions or whatever it is I need to do to get this box to display these pictures?

If anyone can help with this I'd be extremely grateful

IFrame Help

onlywg — Sat, 21 Nov 2009 01:37:59 GMT

I have hosted my page temporarily at http://www.dinkypage.com/32878 . What I want to do is (1) allow the user to resize the Iframe. The 2nd thing I want to do with this is make it more user friendly. Currently, if someone types "yahoo.com" into the input box at the top and presses "enter," the page will just reload. I want to modify it so that it will enter that text to the Iframe.

Thanks in advance.

Mouseover script help?

Godslamb — Sat, 21 Nov 2009 00:19:47 GMT

Hi,
I have been using a mouseover javascript for mouseovers over graphics that works wonderfully for my websets. I would like to be able to use the same script for a bordered webset. Is there a way to do this easily?
The url to one of my mouseover websets is here:
http://www.godslamb.net/wonder/santaroll.html
You will notice that when you run your mouse over Santa, it lights up. I would like to be able to have it light up the same way on other websets I will make, but on the side of the set instead of the main graphic. (The graphics run along the side of the page.)
I hope I did this right, and explained it properly.
Thank you.
Carol

How would I fix this?

jbg00d — Sat, 21 Nov 2009 00:05:53 GMT

check out the step 1 - 3 videos... In IE the Videos won't stop playing when closed or switched, but works Fine in Firefow and Safari.

http://shopgbg.com/AdvancedOpportunityPage.aspx

Any ideas?

Thanks.

How can i pass a

Search

Hidden input

select-multiple click !!

tahim — Fri, 20 Nov 2009 21:10:43 GMT

Please, I'm trying to help one non-profit organization developing one applescript, but I don't know anything about javascript and I need to find some command to activate one link through the 'do javascript "command" ' in applescript.

here is the HTML:

I hope this information is enough to help me.
I need to click on these links shown, but I don't know how.

Please, if someone can help me. It's for a good cause.

Thx!

Text Field Value to Equal Radio Value

FattiFat — Fri, 20 Nov 2009 20:35:32 GMT

Hi Everyone,
I would like to know if I can get javascript to simply pass the value of a text field to a radio field.

Here is the scenario:
I have a form with 2 fields (a radio group and a text field) where a user either chooses an option from a radio group or enters their own value. It looks like this:
1. Select an option:
o A
o B
o C
o Other
2. If you chose Other, enter value here: ______

Therefore, when the values get posted in the form results, it would either be "A", "B", "C" or [what the user entered in the text field].

I am not too skilled with Javascript, so I am open to suggestions. If it is possible to just have a pop-up text box appear if they select "Other" that can capture the value, then that would be great too. Whatever is the easiest option.

Thanks in advance for the help.
:)

Java script popup window with links

kurie726 — Fri, 20 Nov 2009 20:22:41 GMT

I am using this script to create popup boxes sith information when users hover over a picture. The code works fine in IE 8 on the above referenced link. However, when I put it on our website, it gives an error

Message: 'object1.style' is null or not an object
Line: 324
Char: 5
Code: 0

It works great in Firefox, just IE is causing a problem. The website in questions is

www.stafford-catalog.com

Could anyone tell me what the problem might be? Thanks.

Problem with JavaScript/XSL

davidbirkin1988 — Fri, 20 Nov 2009 20:13:53 GMT

Hi Folks,

Long time reader - First time poster.

I haven't long started programming with Ajax technology and I have cropped upon an issue that has really stumped me.

I have an XSL file with the following contents:

Code:









        

                   Footballl


            

              

                      

                      

                      

                      

                      

                 

        

            

                    

                                

                                

                                

                                

                                

                                

            

    

    Player Team Number Position Field Area

The XSL displays the initial output onto the web page: www.dbirkin.co.uk/uni/wdd2

However, when using JavaScript pass changes into the XSL:IF test statement to change the data on the screen.

The JavaScript code is as follows:

Code:

var xml, xsl; 

xml = loadXMLDoc("xml/players/players.xml");

xsl = loadXMLDoc("xml/players/players.xsl");



function loadXMLDoc(dname)

{

if (window.XMLHttpRequest)

  {

  xhttp=new XMLHttpRequest();

  }

else

  {

  xhttp=new ActiveXObject("Microsoft.XMLHTTP");

  }

xhttp.open("GET",dname,false);

xhttp.send("");

return xhttp.responseXML;

}



function loadPlayerData(){

        //xml=loadXMLDoc("xml/players/players.xml");

        //xsl=loadXMLDoc("xml/players/players.xsl");

        displayPlayerResult();

}





function displayPlayerResult()

{

// code for IE

if (window.ActiveXObject)

  {

  ex=xml.transformNode(xsl);

  document.getElementById("players").innerHTML=ex;

  }

// code for Mozilla, Firefox, Opera, etc.

else if (document.implementation && document.implementation.createDocument)

  {

  xsltProcessor=new XSLTProcessor();

  xsltProcessor.importStylesheet(xsl);

  resultDocument = xsltProcessor.transformToFragment(xml,document);

  document.getElementById("players").innerHTML="";

  document.getElementById("players").appendChild(resultDocument);

  }

}



function MM_jumpMenu1(selObj, selObj2)

{ 

var selObj = document.getElementById("positionmenu");  // Set value of Drop Down Menu 1's Selected Value

var selObj2 = document.getElementById("field"); // Set value of Drop Down Menu 2's Selected Value





        x=xsl.getElementsByTagName("xsl:if")[0]; // sets element for ie

        alert(x); // Returns a "Unspecified" or "null" Error

        if (x==null) { 

                x=xsl.getElementsByTagName("if")[0];// sets element for other browsers

                alert(x); // Returns an "unspecified" or "null" error

        }

        var testoption = ("position='" + selObj.value + "' and fieldarea='" + selObj2.value + "'"); // Concatanated string for input to the TEST statement

        alert (testoption);

        x.setAttribute("test", testoption); //"position='Defender'"

        displayPlayerResult();  

}

The code in RED is where my error is occuring. Object is apparently unspecified and the browser is not recognising the XSL:IF attribute within the XSL file. I don't know if you need to state XSL:IF differently but when i used the same function with XSL:SORT it works fine.

Any help would be highly appreciated.

Many thanks,

David

At my wits end - I am stumped and ready to thrash my computer

seebra — Fri, 20 Nov 2009 20:00:36 GMT

I am getting an error, in IE only (7 and 8). Firefox, Safari and Netscape work fine.

The problem is with older code, that I have not worked with. (Owner just noticed it, so now I am stuck fixing it.)

The code is bascially a dynamic text box, that when a user starts typing in a product name, it displays a drop down list that the user can use to select a product. Once they select their product, a second drop down box displays the various sizes and prices (i.e. Small - $7.50, Medium - $8.50, Large - $10.50.)

The error I am seeing in IE is the following: 'name' is null or not an object.

Here is the actual select boxes code:

Code:







        Size

The actual error is occuring here - again only in IE - firefox and other browsers work fine.

Code:





var handleSuccess = function(o){

                                var test=eval(o.responseText);

                                

                                if(test != undefined){

                                        removeAllOptions(selectbox);

                                        addOption(selectbox,'Choose Weight','');

                                        for (var i = 0; i < test.length; i++){

                                                addOption(selectbox, test[i].name, test[i].id); - here is where it throws an error                                        }

                                }else{

                                        removeAllOptions(selectbox);

                                        addOption(selectbox,'Select Product','');

                                }

                                

                        }

For the life of me, I cannot figure out how to solve this. And I am forced to work until it is fixed, which could be days. No weekend for me unless I can figure this out, or unless someone has a clue that I am missing.

Thank you to whomever can help me!!!!!!!!

String Object Method Help

bigalo — Fri, 20 Nov 2009 19:43:52 GMT

Hello,

I was able to solve an issue I had in previous post in writing some code to grab a section of a cookie value string (2 letter state ex MD) and check against it to do something. That was easy because the state was at the end of the string and all I had to do was use the slice() method. Now I was to be able to grab the 2 letter state from a string that looks like this:

BALTIMORE, MD|blah blah|blah blah|blah blah (the real cookie value string will always be separated with pipes (|))

Can anyone please help?

Thanks in advance!

Code:

















Step 1.  Copy and paste in cookie set text field: 





Show Image1:


CHARLOTTE, NC|blah blah|blah blah|blah blah|blah blah


BALTIMORE, MD|blah blah|blah blah|blah blah





Show Image2:


COLUMBIA, SC|blah blah|blah blah|blah blah


RESTON, VA|blah blah|blah blah|blah blah





Show Image3:


LOS ANGELES, CA|blah blah|blah blah|blah blah


SEATLE, WA|blah blah|blah blah|blah blah








Step 2.









Step 3. Now refresh page. 









 DEFAULT IMAGE 




Image 1 - DIV 1


Image 2 - DIV 2


Image 3 - DIV 3

Run program from JScript

Rubenvh — Fri, 20 Nov 2009 18:28:13 GMT

Hi all,

I would like to open any program on a computer, using JScript.
I have this little piece of code here...

Code:

function run(url) {

var File = url;

var WSH = new ActiveXObject("WScript.Shell");

WSH.run(File, 1, true);

}

Example:

HTML Code:

"#" name="cmd.exe" title="Cmd" onClick="run(this.name); return false;">open cmd

Opening a file like this works perfect.

Now another example...

HTML Code:

"#" name="C:\Program Files\Internet Explorer\iexplore.exe" title="Internet Explorer" onClick="run(this.name); return false;">Internet Explorer

This DOESN'T work... I think it's because of the spaces in the url... What should i do to make this work?

Ruben