Is there any way to associate name/value pairs during an array initialization? Like so:
sType = "funFilter"
filterTypeInfo = [];
filterTypeInfo[sType] = new Array("type" : sType);
I can do it using this:
sType = "String"
filterTypeInfo = [];
filterTypeInfo[sType] = [];
filterTypeInfo[sType]["type"] = sType;
but that seems rather cludgy. I want to use array objects not Object objects as described here:
I would like to step through all the key-value pairs in an associative
array. I'm trying:
for (var i=0 in hashOfItems) { // go through all keys in the hash
hashOfItems
// do sth
}
which works fine in Internet Explorer but does not seem to be
recognised in Netscape Navigator. What is the right way to write this?
I can't figure out why this doesn't work:
---------------------------------------------
greeting = new Array();
greeting[0][0] = "hey";
greeting[0][1] = "bye";
trace(greeting[0][0] + greeting[0][1]);
---------------------------------------------
Shouldn't this automatically create a multidimensional array? Can someone
help me?
I have a piece of JS code that uses the eBay REST API for searching. Each item returned is converted to an array and added to another array, giving the following format:
searchResults[1stItem]
searchResults[1stItem]["price"]
searchResults[1stItem]["bids"]
searchResults[1stItem]["endtime"]
searchResults[2ndItem]
searchResults[2ndItem]["price"] ... etc
What I want to do is sort the main array by an item in the second level of the array (ie price). Does anyone know how this can be done?
While arr[i] works fine in a loop, the addition of another dimension...arr[0][i]...means that it will not accept an assigned value.
View 12 Replies View RelatedI'm trying to concatenate two arrays but it doesn't work.
The code looks like
Code:
And the console output looks like:
Code:
But I was expecting:
Code:
Does anybody know why those two arrays won't concatenate?
how would one post a multidimensional array to a php script. The ajax section on here in the docs... only show how you would pass just one array. I need to pass a multidimensional arrays to my php scripts.
View 2 Replies View RelatedI am working on a project which requires a method to join or split multidimensional arrays according to its arguments, which would be string delimiters for the various dimensions of the array.
An example of the join function might be:
The split function:
This would turn 'str' into an array like this:
I think I may have found the problem (but not the solution) - it looks as though javascript won't perform a method on an array which is part of another array. Firefox error console gives me "arr[0].join is not a function".
I need to be able to match a particular element in a "row" of a multidimensional array, and then find and reference the other elements in that "row".
Below is a sample of the whole array...
Code:
var commercialProductList=new Array(
new Array("Sydney Automobiles - Online","Sydney_Automobiles_Online","users",60.39,3.02,1.21),
new Array("Sydney Automobiles - Hard
[Code]....
New to javascript here. I'm trying to do something that would be very easy to do in php, but is quite hard in javascrpit due to the lack of support of associative array.
[Code]...
push() to add clickedElementId as a value associated to a numeric key, but then how would you remove a specific element from the array? How would you approach such a typical algo in javascript? Regards,
Is it possible to have an Object as the key for an Associative array
like in the following example....
function Obj(var1, var2)
{
this.var1 = var1;
this.var1 = var1;
}
function test() {
var sectionArray = new Array();
var obj = new Obj("c","k");
var obj2 = new Obj("3","n");
var obj3 = new Obj("v","qk");
sectionArray[obj] = "king";
sectionArray[obj2] = "queen";
sectionArray[obj3] = "joker";
alert(sectionArray[obj]);
}
This does not give any error but the alert says "joker" instead of
"king". Is there anything wrong with my code or is an Object something
that just can not be used as a key.
If it is the latter can someone please suggest another way for me to do
it? Can I use a concatenated String instead of an object? My only
problem then is how would I extract the values from the String, does
JavaScript have a tokenizer method like Java?
I am having a problem with this test html below. When I enter a correct
city I keep getting an "Object expected" error on the town field....
Something like this:
['level1key':['level2key:'value']]
That is the value itself is any object.
How can I check if a key is defined in an associative array?
var users = new array();
users["joe"] = "Joe Blow";
users["john"] = "John Doe";
users["jane"] = "Jane Doe";
function isUser (userID)
{
if (?????)
{ alert ("This is a valid ID"); }
else
}
But what goes in place of the ????
I have been trying to figure out how I could go from an associative array to JSON. Is there a function for this?
View 10 Replies View RelatedI m using an AutoComplete Textbox..!! i want to pass id and value to the next page..!!
[Code]...
Your table-driven application has a MySQL table on the server side and you want a Javascript associative array on the client side to do rapid look-ups.For example: My application uses the value selected from the form’s drop-down menu to choose which other form fields to hide or show. This choice of a 'Long Form' is table-driven from product data in a MySQL table.
Convert the MySQL table to an associative array in JavaScript.I am using the jQuery library to manage the presentation and form validation on the client side and PHP and MySQL on the server side.Since a JavaScript Object is an associative array and the MySQL table is being used as a look-up table (associative array) I use the PHP function json_encode to create a JSON string - JSON is JavaScript Object Notation - on the server which is then evaluated as a JavaScript Object on the client. The two parts (server and client) of the code are listed below.All very straightforward then. So why the blog?This is what I do (here's the PHP code):
do { $key = $row['ProductKind'];
$value = ($row['LongForm'] ? True : False);
$arr[$key] = $value;
[code]...
As a newcomer to jQuery this is a good opportunity to show my appreciation to John Resig and the people that have contributed to the jQuery library ... not forgetting those who have integrated all the MySQL and JSON stuff into PHP. It's all very neat ... when you get to understand it!You could just eval(data) to turn the JSON string into a JavaScript Object (a.k.a. associative array), but JSON.parse protects your code against evaluating malicious scripts that could be embedded in the JSON string. This function is found in the json2.js downloadable until included in native browser JavaScript engines.The PHP Booleans translate automatically into JavaScript Boolean types.
[Skip this: My application has a MySQL table of product categories that tell me whether I need to present the administrator with a long form or a short form in the HTML. So, as products are added over time, I want to the administrator to choose whether a new product category can take the short form plus some default values or will require the explicit input of all product values in the long form. As the administrator assigns a category to a new product - and changes his mind half a dozen times - I don’t want to keep on going to the server to do the look-up but want to have the table in Javascript to keep the form presentation responsive. Also, the MySQL tables are on a third party’s server remote from the web server.]
I need a way to store an associative array in a cookie. Or maybe JSON encoded string. I am using jquery.
var cookie=[];
cookie["product_1"]=[];
cookie["product_1"][cookie["product_1"].length]=12;
$.cookie('uploads', $.toJSON(cookie), { path: '/', expires: 10 });
am just trying to learn javascript and my friend gave me a little assignment to try and figure out. i am having trouble figuring it outbasically i just want to display the information in my associative array, into an html table.
var NFC_east = new Array();
NFC_east[0]=["Giants", 16, 0, "Eli Manning"];
NFC_east[1]=["Cowboys", 0, 16, "Tony Romo"];
[code]....
I'm trying to create a multi-dimensional associative array that has some of its data created dynamically. The code I've currently got is as follows (using JQuery to retrieve form element values):
Code JavaScript:
var data = {
label: $('#label').val(),
child_float: function() {
[code]....
.. if its values were not being created dynamically. However as you can tell that isn't what is being generated at the moment, as there's no opening/closing brace before/after the child_float's member variables. Any ideas what changes I need to make in order make the child_float behave as intended?
Lets assume the following object
Code:
var x = {
y: {
z: 10
}
} ;
Next, I need to retrieve the value '10', but the only thing I have is one string as a key For example (this doesn't work):
Code:
var str = '[y][z]' ; // or 'y.z'??
alert(x[str]) ; // should alert 10
Can this be done using a single string as input for x ?
UPDATE: a solution which comes close to what I was looking for is
Code:
var str = "x['y']['z']" ;
alert(eval(str));
I have an associative array like this:
arr[x1]=30; arr[x2]=20;arr[x3]=40;arr[x4]=10;
I want the sort function to sort keys in ascending order of the values
on the right hand side with the following result:
x4,x2,x1,x3
I'm trying to create an associative array in javascript from within the loop that sets up my html table. I can't get my head around assigning the associative key-value pair (probably not the best way of putting it). I've written the below in php. What's the equivalent in javascript? The => is the part that's baffling me.
PHP Code:
$test_array[] = array ([INDENT]'seller_id'=>$seller_details[$column]['seller_id'],
'products_id' => $item_details[$idval]['products_id'],
'shipping_price' =>$item_details[$idval]['shipping_price'])[/INDENT]
I am wondering if my code *should* work. I have a php file that reads in images from various folders. It stores the file paths in a javascript array by using echo statements. The array is also defined in the php file, as below, outside of the php tags.
var galleryarray = new Array();
for(var i=0; i < galleryarray.length; i++)
{
[code]....
I am getting an error when running the HTML file that says "galleryarray[f1][f2] is undefined". I have another version of this that stores the file paths in a single-dimension array, and this works fine. I am thinking that there could be something wrong with how I am using the multidimensional array in the javascript.
I want a lookup table that matches url fragments to the name I want to show. For instance, if a url contains "yahoo.com", I want to print "Yahoo." For now, I created a multidimensional array that maps url fragments to a name. such as,
var urlMapping = [
{ urlpath: "yahoo.com", mapto: "Yahoo"},
{ urlpath: "google.com", mapto: "Google"}
];
So, say I have a variable urlVar, where the value is some URL (for example,[URL]).Is there any way - other than looping through the array for every variable - to check if urlVar contains any of the substrings in urlMapping.urlPath, and if so, output urlMapping.mapto? (In this case, I want urlVar to find that it contains the substring "yahoo.com" and output "Yahoo".) In my code, I anticipate that I have 100 variables checked against 50 mappings, and performance is important to me.
Is there any function or property for finding out the size of the first (or for that matter any) dimension of a multidimensional array?EDIT:There seems to be no such functionality, I found a solution that does not require it. If anyone is reading this for the same reason; it needs to be scripted.
View 2 Replies View Related