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?
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:
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.
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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..!!
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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;
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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"];
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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() {
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.. 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 want to create an associative array dynamically pulling the index values from an array (propertyArray); Associative array is created inside create function and then returned. But after it is returned, I cant use index names to retrieve values. It returns undefined as below code shows.
Code JavaScript:
var propertyArray=["a","b","c"];
function create(){
var array=[];
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I am building a customised javascript prototype to sort an associative array on the array key (in ascending order). Basically, I am separating the array keys into a separate array and then using .sort() to sort the keys and then reassembling the original associative array elements according to the sorted keys array.
The sorting works ok except that when I run the test code below, the outputed sorted associative array has an extra element at the end of the array whose key is the name of the prototype function and the value for that element is the function code itself. Obviously I am misunderstanding something about associative arrays or how javascript prototypes work.
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Is there a way to get a page to appear in a new tab in the same window in
Netscape 7?
I am creating a site that will use a Client-Side Include (CSI) to dynamically generate an ad banner to be placed on the right hand side of the page. It loads great in IE5 and above and Netscape 7 and even loads fine in Netscape 4.7. The problem is when the user resizes the window, the ad banner that was generated is then placed at the bottom of the page. I even look at the HTML of that particular page and the CSI is thrown into the bottom portion of the site. I am perplexed as to how it just throws it down AND knows where in the HTML code to insert itself.
If anyone has any ideas on how to stop this snippet of code placing itself anywhere in the site, I would appreciate any help. Again, it LOADs fine but when the user decides to re-size the window, it just moves it down to the bottom of the site.
I've got a trouble with my script, i want to show a <div> on Netscape
and it doesn't work: Here is the script
//navigators identification
var ie4=(document.all && !document.getElementById)? true:false
var ie5=(document.all && document.getElementById)? true:false
var n4=(document.layers)? true:false
var n6=(!document.all && document.getElementById)? true:false
// creation of three div Code:
My Website (Template) uses JavaScript to create a pop-up window in the
gallery.With IE it works fine, but not with my Netscape 7.0. No Pop up apears.
In the script I found the line:
if (browser_type == "Microsoft Internet Explorer" && (browser_version >=
4) && (navigator.userAgent.indexOf("Windows") != -1)) {
has it something to do with not working?
I created a menu bar for my page using Sothink DHTML Menu 4.1 which created javascript file. I also add a small slide show on the page using javascript and the javascript is embedded in this page's HTML.
Everything works perfectly with IE. However, Netscape (4, 6, 7) can't see the menu bar created in DHTML when the slideshow javascript is present.
If I just have the menu bar or slideshow alone on the page, Netscape can see it, but it seems that Netscape always ignores the DHTML script when both javascripts are present. Not sure what is going.
I have tried to put the slideshow javascript in the .js file that has the DHTML code for menu bar, but it didn't work either.
I just installed the LoveSan security patch from MSFT and turned on
Auto-Update. Now applets do not load. I tried getting Netscape 7.1 but
it directs me to the Sun page to install JRE. I do this but still
neither IE or NS will load applets. Tried downloading some from
various websites with free applets but these do not work either. Any
ideas?
I have a problem with NS 4.7 (I know, it is old, but I have no
choice...) :
So, I have a page with a link to open a new window:
var strHtml = '<html><head><title>title_of_window</title>' +
'<LINK rel=stylesheet href=theme.css>'+
'<SCRIPT LANGUAGE="JavaScript" SRC="my_script.js"></SCRIPT>' +
'</HEAD><BODY onLoad="fonc_onLoad();" class=Body topmargin=0
leftmargin=0 MARGINWIDTH=0 MARGINHEIGHT=0>' +
'blablabla' +
'</body></html>'
var win = window.open('', 'window_name', 'parameters');
win.document.write(strHtml);
win.document.close();
win.focus();
My problem concerns the tag "onLoad " of the "BODY" tag: with IE, the
"fonc_onLoad()" starts normally (this function is in "my_script.js"),
but with NS 4.7 (ou 4.51), the <SCRIPT> tag is ignored (you can view the
window's source code), so the "fonc_onLoad()" function cannot not start.
i have a netscape and IE incompatibility problem. when i change the text size in netscape everything looks fine and all frames text size change. but when i change the text size in IE just one frame change!
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