Data-Type Reference Material?

May 20, 2011

oes anybody know of a good reference document/source for data types that you can pass to a function, please? What I want to establish are the variety of elements that can pass data to a function in the following way:If you set a value to a table cell (<td>) then you retrieve it in the function thus:

function(row) by calling function(this).

I know that divs and spans can do this too, but how about images in a loop with unique names etc?

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How To Pass This Type Of Reference Into An Array?

Oct 7, 2004

I am doing in a loop

element = xGetElementById(obj.ID+i);
position = element;

I need this several times in my script and I am sure it createst quite a lot of overhead. And I would like to pass xGetElementById(obj.ID+i) into an element array. like:

element = new Array();
element[i]=xGetElementById(obj.ID+i);

So I can call back element[i] etc in my script by saving some overhead BUT (there is always a 'but' in my posts ) then:

position = element[i]

does not give anything.

Any clue? Is it possible?

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Nov 5, 2002

Using DOM in IE 5.5 I'm dynamically building table rows containing HTML input elements (checkboxes, text boxes, etc.), one element per TD. Note that these rows are clones - all the element id's for a given element are the same across rows.

Now, For certain things I need to reference two or more elements in the same row. For example, if I check this checkbox I want to enable that text box.

When I click a checkbox I know what it's parent is (the specific TD) and the grandparent (the specific row).

My current effort has me grabbing the table row where the click event happend then, using a pair of nested loops searching for the specific field I want. It works, but it looks like overkill to me. There's gotta be a more elegant way. I don't want to search through all the childNodes when I know which field I want, and it has an id unique to that row.

Can I reference things by their id? In other words I want to say something like this:
thisRow = variable reference to the TR object containing the clicked-on element.

thisRow.theTDid.theCheckBox'sId.checked = false;

or at worst:
thisRow.getElementById("theTDid").getElementById("theCheckBoxId").checked = false;

These don't work but what would? I want to avoid blindly iterating through all the TR's childNodes inside a loop going through all the TD's childNotes, looking for a specific data entry element.

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Vector Data Type (2nd Attempt)

Sep 13, 2006

A while ago I wrote a "Vector data type" script
using DOM interface to select.options.
That was a (beautiful) mind game :-) rather than
a practical thing to use.

Here is another attempt open for criticism, this
time dead serious. I really need an effective
Vector emulator for a project (as much effective
as something not implemeted in language but
emulated by means of the language itself is: a
productivity impact is imminent, the question
is to minimize it).


<html>
<head>
<title>Vector constructor</title>
<meta http-equiv="Content-Type"
content="text/html; charset=iso-8859-1">
<script>
function Vector(arr) {
this.$_$ = arr || new Array();
this.length = this.$_$.length;
this.add = Vector.$add;
this.remove = Vector.$remove;
this.toString = Vector.$toString;
}

Vector.$add = function(m,i) {
if (('number'!=typeof(i))||(i<0)||(i>=this.$_$.length)) {
this.$_$.push(m);
}
else {
var tmp = [m];
tmp.push(this.$_$[i]);
this.$_$.splice(i,1,tmp);
}
this.length = this.$_$.length;
}

Vector.$remove = function(i) {
var ret = this.$_$.splice(i,1)[0];
this.length = this.$_$.length;
return ret;
}

Vector.$toString = function() {
return this.$_$.toString();
}

// Create new vector and use it as a wrapper
// over Array argument:
var v = new Vector([1,2,3]);

// add(newElement, atPosition) method
// if no atPosition provided, newElement will
// be added to the top
v.add(4); // add 4 to the top

// Add 3.5 atPosition 3
// The element currently located at v[3] and all elements atop
// of it will be moved one position up
v.add(3.5, 3);

// remove(atPosition) method
// Elements currently located atop of it will be moved
// one position down
v.remove(1);

// toString method is overloaded so in string
// context it gives comma-separated vector values
alert(v); //1, 3, 3.5, 4
</script>
</head>

<body>

</body>
</html>

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Jun 12, 2011

Im trying to get the hang of it. I am trying a simple data entry page, where you can enter the name and type of an animal (eg Freddy the ferret) and it will be added to an HTML table.

The bottom of my table looks like this...

...and I have the following in the <head> tag of the page...

The way I thought this should work is that the first bit of the line would create a new DOM element, consisting of a <tr> with three <td>s in it, the first and second of which would contain the values the user entered. This new DOM element would then be inserted into the table right before the last row.

The problem is that the values from the two <input> tags are ignored, and a row with three empty cells is inserted...

I tried adding the following to the script...

And this showed fine, implying that I am getting the values correctly.

I even tried hard-coding the whole line, but that still added empty cells. Oddly enough (to me anyway), the space in the third cell was recognised, but the hard-coded text in the first two cells wasn't.

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I tried to get it to work for just not type=text

$(':not(:text)')
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I can't seem to figure it out.

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Jul 15, 2011

I'm trying to use a plugin for paging from jquery, the thing is that the demo is not very clear, at least for me that I'm not very familiar with jquery and httphandlers. Here is the javascript code.

$(function () {
var a = 10;
var b = 10;[code].....

Then in my handler I'm trying to do this, this is beacause I'm following a tutorial to use a Jquery Plugin for paging, the web page for this plugin is http://jpaging.fahon.org/usage.In the handler it puts this code in the http context function

the "context" is the HttpContext variable.

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I thought it was getting the variable "type" from the data in the ajax in the javascript but it does not get me anything, it always gets null.What am I doing wrong?

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Script is as:-

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This code does not working in Mozilla. Works fine in IE.
--------------
<input type=text value=100 name=textbox>
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</script>
--------------
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Apr 7, 2005

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Jul 23, 2005

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i have this code:if (! $_POST["Name"] || ! $_POST["LName"] || ! $_POST["email"] || ! $_POST["phone"])
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<script type="text/javascript">
confirm("Form is INVALID");

[Code]...

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Jul 23, 2005

We're in the process of re-writing the Intranet at work, and my javascript
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Can any of you point me in the direction of some code that would enable a
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--------------------
All of our purchase orders are saved back to pdf files. Each pdf has the
prefix "PO_" followed by the po reference, then the file extension ".pdf".
For example, our file would be called "PO_12345M.pdf".
Each set of files is archived into years (folders are called 2003, 2004,
2005 etc.) so it will probably need a drop down box to select year, unless
it can search through all the folders.

The visitor should only need to enter the PO reference, and the code puts
the "PO_" and the ".pdf" on the end of it, and hey presto Acrobat opens with
the PO, or you get an error dialog if the file cannot be found.
--------------------

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I have a function in that file that needs t obe specific
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file from a common function I want to call
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var referenceToBodyNode = arrayOfBodyElements[0];

I tried:

var referenceToBodyNode = document.body;

and:

var referenceToBodyNode = window.body;

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So what is the right way to get a reference to the body?

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[code]....

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