Referencing Arrays Of Objects?
Sep 16, 2010
I am trying to return a JSON string from a server with a list of locations. I want to populate a div with checkboxes and the names of the locations.This is the JSON string I am currently working with:
Code:
[{"loccode":2,"locdesc":"Atlanta"},
{"loccode":1,"locdesc":"Charlotte"},
{"loccode":0,"locdesc":"NA"},
{"loccode":3,"locdesc":"Test1A"}]
I have a similarly formed data definition that is hard coded in the javascript for permissions that looks like this:
Code:
var prm = [
{"id":110,"idtext":"110","prmdesc":"Users"},
{"id":130,"idtext":"130","prmdesc":"Forms"},
[code]....
When i run that bit of code it displays Test1A and that is all.I am certain I am missing something basic, but I have not been able to figure out what it is.
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Jul 4, 2011
"When we combine FUNCTIONS with OBJECTS we get METHODS". Then he creates an empty ARRAY:
var a = [];
then he uses the "push() method" to add elements to the array.
a.push(1,2,3);
uh, methods are for *objects* right? Yet he is using them on an ARRAY.how an array can magically becomes an object that is manipulated by a "method"?I mean, the array is still an array, no? It never actually becomes an object, right? Yet we still use a *method* to manipulate it. See my conceptual quandry?
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Jun 20, 2007
I recently had a problem where I needed to build up an array of strings, that would be join()ed into a string when the array building was complete. however, each value could only be in the array once.
This was a problem for a few reasons. Once a value has gone into an array the only way to check for it that works cross-platform is to scan the array looking for the value. FireFox has the every() and some() functions but they don't work in anything else.
Using an object to simulate an assocaiative array would allow me to avoid this problem by storing key/values with the keys having the same value as the value I was storing. I could then use the (a in b) construct to check that I had not already added a value.
However, array type methods won't work with objects, so I had no access to size () or join () meaning I'd have to manually build the string by iterating over the object.
My solution was to use an array object, but to store the provided data i nboth the array proper and as a property of the array object.
var myArray = new Array;
function addVal (val)
{
if (!(val in myArray))
{
myArray [val] = 1;
myArray.push (val);
}
}
addVal ('one');
addVal ('two');
addVal ('three');
addVal ('one');
addVal ('two');
addVal ('three');
console.log (myArray.length);
console.log (myArray.join (', '));
This approach does use up more memory but it does give me the advantages of both arrays and objects for little extra work. (if you don't have FireBug then replace console.log with alert)
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Oct 28, 2003
I am dabbling with objects and have successfully created an object with various properties, one of which is an Array, and all is fine. the Question I have is can I make an Array of objects? I have the following object:
dataSeries.Type = value
dataSeries.Name = value
dataSeries.dataPoints[n] = Array of values
dataSeries.color = value
What I would like to do is have an Array of multiple objects supposedly like:
dataSeries[0].Type = value
dataSeries[1].Name = value
dataSeries[2].dataPoints[n] = Array of values
dataSeries[3].color = value
Is this possible?
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Apr 10, 2011
I'm have some javascript objects with arrays that should be transferred as php array.Its posted by ajax httpRequest.How can I return php array, from the javascript?
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Apr 24, 2011
I am really hoping someone is willing to take the time to read this post and take a minute to take a look at my code. What is happening is there are some matches for a script I made and then an area for segments during an event. If you notice on the segment part of the form is that there is a dropdown that asks for where in the event that segment needs to go. With the Introduction or the different numbered matches. What I need to happen for a subArray I need it to take the introduction, all the matches, and all the segments and order them accordingly. With the introduction first, the matches in order based off there match number and then the segments in between the introduction or matches based off the user's input.
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Feb 10, 2011
Trying to figure out OO programming for JavaScript and I'm totally lost.
Here's what I'm trying to do:
I'm posting search data to a PHP form to run a query on a database.
The structure is sort of like this:
So I'm thinking I need to create search objects or arrays. Initially, I thought I could do something like this:
Code:
This doesn't seem to work. It says object not defined whenever I try to do something.
I've also tried creating a JSON object like this:
Code:
This will allow me retrieve the data like I want to:
Code:
The problem is I can't figure out how to add data to the JSON object without manually typing it in. I need to be able to loop through form elements on my HTML page and set them to these variables. I'm using jQuery and doing something like this:
Code:
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Apr 17, 2011
Is there a way in Javascript or Jquery to return an array of all objects underneath a certain point, ie. the mouse position. Basically, I have a series of images which link to various web pages but I have a large semi transparent image positioned over the top of the other images. I want to find the href of the background image that the mouse pointer clicks over.
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Sep 5, 2009
Is there a better way to extend object with internal objects?
$.fn.bestShow = function(s) {
var d = {
width: 0,
height: 0,
order: "numeric",
orderBy: "",
[Code]...
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Oct 6, 2004
I'm trying to get a value from a link that a user click on in a pop up window and send it back to the parent window. It's working fine in mozilla and some IE but i'm having problem in IE 5 and some IE 6.
<a href="javascript:opener.document.getElementById('<?php echo $_REQUEST[partid];?>_partremoved').value = '<?php echo $partnum;?>'
opener.document.getElementById('<?php echo $_REQUEST[partid];?>_partinstalled').value = '<?php echo $partnum;?>'window.close();">
<?php echo $partnum;?></a>
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Jul 23, 2005
if i have this code: <form><input type=text name="id1"></form> then with
javascript i can reference this with this.form.id1, how can i reference
something like this:
<table>
<tr name="id2">
..
..
</table>
?
this.id2 doesn't work
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Oct 29, 2009
whenever I run the below code I am unable to hide my <DIV>. I have posted a previous post regarding hiding DIVs however as this is slightly different I thought I would create a new topic here to allow for easier searching for other users.
The below code works if the DIV is outside of the form however if I enter it within the form nothing happens.
<form name="formcreate" method="post" action="">
<table width="80%" border="0" cellspacing="2" cellpadding="2">
<div id="div1">
<tr>
[Code].....
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Aug 28, 2007
Is there a way in the Javascript to reference the dom of another page that is online. An example would be if www.cnet.com has an element with an id = money can I reference that page with an object that and get a value from the money element and display it on my page. I know this sounds confusing but really i just want to be able to save a xhtml page that is not on my website. Create a input filestream from that page and use data from the filestream to make data on my own page.
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Apr 12, 2006
A have an array of objects defined like this:
var collegas =
[{smtp:'alberic.verhelst@king.dom',voornaam:'Alberi c',famnaam:'Verhelst'},
{smtp:'anita.dierens@king.dom',voornaam:'Anita',fa mnaam:'Dierens'}, etc
I iterate over this array with this code :
for (var i = 0, stop=collegas.length ; i < stop ; i++) {
for (var veld in collegas[i]) {
etc
I would like to check whether a particular veld instance's name is smtp. In
code what I want is this :
if (veld.fieldName=="smtp") { do something ...
But this syntax doesn't work.....
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Jul 20, 2005
I would like to reference the "name=value" parameters sent to my page
(submit'ted from a previous page with a <form>.) in my javascript.
I can do it if my second form is called with a "get" using the
window.location.search property, etc.
I don't know where these parameters are if my second page is called with a
"post"...
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Jun 1, 2010
I am loading a set of icons using an array. The reason for this is that the icon set will be different depending on what some PHP code has given to the JavaScript.
My code currently looks like this.
Code:
var things_to_load = new Array();
things_to_load['header_cursors'] = new Array( 'default' , 'pointer' );
things_to_load['header_icons'] = new Array( '../img/triggers/to-roll/undo.png' , '../img/triggers/add.png' );
things_to_load['header_labels'] = new Array( 'undo' , 'add' );
[Code].....
The problem I have is that the click function gives the error "things_to_load.header_clicks[c] is not a function".
This makes sense as presumably the click function is saving the value and not what that value references.
how I can get this code to save the function not the string referencing it?
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Feb 10, 2009
i have a simple thing that causes me all sorts of headaches. I have many forms on the same page, and identical items in each form. The same object in each form call the same procedure. So, I'm passing in the form value, such as:
onchange="DoMyFunction('formName');"
and then in the procedure i do:
function DoMyFunction(formname){
document.[formname].object.value='1';
}
Now i have functions like this all over, problem is getting them to work. Once they work, they work fine. But when i add a new one, it can match an old function (except the object being referenced) and it won't work!
Does anyone know the proper way to reference a form in a function?
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Sep 2, 2010
My functions for mouse_move / up / down all control the movement of a box. So you can click a box and move it anyway. It then snaps to an invisible grid. However there are multiple boxes on the screen so if you move it to a spot where another box already resides, then that box needs to swap places.This is what the mouse_over function tries to do. When I click the first box it stores the position of that box that was clicked. If I release the mouse button whilst hoovering over another box I want the other box to take the stored positions of the first box.However what I think is happening is the mouseover function is applying the new position to the box I'm moving, as I guess this is the first layer the mouse is over.Is there anyway I can reference the layer underneath using onmouseover.
<script language="javascript">
var x;
var y;
[code]....
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Dec 9, 2010
I have a table which I would like to be highlighted with the click of a button, but I can't seem to reference it correctly. I can make the <td> clickable and function, but when I try to apply it to the button I can't make it reference the td cell, rather than change the background color of the button.The function is:
function roll(obj){
obj.style.backgroundColor == "pink" ? obj.style.backgroundColor = "#e5e5e5" :
obj.style.backgroundColor = "pink";
[code]....
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Apr 17, 2007
for(x = 1; x < totalCheckBoxes; x++) {
checkBoxName = "document.addProductEditor.journalEdit_" + x;
if(checkBoxName.checked == "true") {
//updatedJournalList = checkBoxName.value + ",";
}}
The problem is that while checkBoxName produces the correct variable, the final if statement claims that checkBoxName.checked has no properties. What am I doing wrong?
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Dec 9, 2010
I have validation code on my web form used by passing in the name of a field on the form. I have fields on my form named Hospital1, Hospital2, Hospital3, etc. I am trying to write a For loop to validate each one:
with (thisform)
{
{for (i=1; i<=9; i++)
{
[Code]....
What is the proper format of var vHosp= "Hospital"+i; so that it will recognize that field?
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Mar 18, 2011
My code is below it is pretty straight forward, but it is not working
What I want to do is build a generic class "car" then call it using a prototype
Code:
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Jul 23, 2005
I've written several utility pages that use a dynamically created
iframe. The iframe typically has a form that is populated by the main
page. Then the form is submitted to be processed, and the returning
page does something -- call a function on the main page, change a
variable on the main page, etc.
All this stuff I created works on IE. Sorry, didn't have other browsers
available to test. Now I have access to a machine with FF, and none of
these scripts work.
So, short and sweet: What is the proper way to reference a form on an
iframe from the parent doc in firefox? Also, call a function from the
parent to the iframe, and vice-versa, call a function on the parent doc
from the iframe when it loads?
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Jan 8, 2011
I have created an object called list. the object has a method called load and a method called setSelected (it has more, but they arn't impotant here).
The load method prints out table rows like this:
str+="<tr>"+data+"</tr>";
and in the end, inserting str as the body of a table.
what I want to do now, is have an onclick event for each of these table rows, that calls the setSelected method of the current object. so for example, if I'd write this on my page:
mylist = new list(args...);
mylist.load();
<div id='associated-div'></div>
that if someone clicks a row in the table that is created in the div, the setSelected method of my list oject will be called.
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Apr 7, 2010
I am using the following system to create my forms : <% using (Html.BeginForm()) { %> Now I want to refer to the form in JQuery, but all the examples I can find refer to the form by it's name. How do I refer to my form if it doesn't have a name?
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May 31, 2010
I have this function:
Code:
$(function () {
$('#Tags').tagSuggest({
separator: ", ",
[code]....
This references the #Tags element which is an input text box. I would like this function to run on another element also (#Tags2). So if either the #Tags or #Tags2 text boxes are used, the function runs.How can I extend this function rather than duplicating it?
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