Develop Reference

Every character in an array being recognized with ".hasOwnProperty(i)" in javascript as true with Google Apps Script

This is the array:
{"C8_235550":
{"listing":"aut,C8_235550_220144650654"},
"C8_231252":
{"listing":"aut,C8_231252_220144650654"}}
It was fetched with a GET request from a Firebase database using Google Apps Script.
var optList = {"method" : "get"};
var rsltList = UrlFetchApp.fetch("https://dbName.firebaseio.com/KeyName/.json", optList );
var varUrList = rsltList.getContentText();
Notice the .getContentText() method.
I'm assuming that the array is now just a string of characters? I don't know.
When I loop over the returned data, every single character is getting pushed, and the JavaScript code will not find key/value pairs.
This is the FOR LOOP:
dataObj = The Array Shown At Top of Post;
var val = dataObj;
var out = [];
var someObject = val[0];
for (var i in someObject) {
if (someObject.hasOwnProperty(i)) {
out.push(someObject[i]);
};
};
The output from the for loop looks like this:
{,",C,8,_,2,3,5,5,5,0,",:,{,",l,i,s,t,i,n,g,",:,",a,u,t,,,C,8,_,2,3,5,5,5,0,_,2,2,0,1,4,4,6,5,0,6,5,4,",},,,",C,8,_,2,3,1,2,5,2,",:,{,",l,i,s,t,i,n,g,",:,",a,u,t,,,C,8,_,2,3,1,2,5,2,_,2,2,0,1,4,4,6,5,0,6,5,4,",},}
I'm wondering if the array got converted to a string, and is no longer recognized as an array, but just a string of characters. But I don't know enough about this to know what is going on. How do I get the value out for the key named listing?
Is this now just a string rather than an array? Do I need to convert it back to something else? JSON? I've tried using different JavaScript array methods on the array, and nothing seems to return what it should if the data was an array.

here is a way to get the elements out of your json string
as stated in the other answers, you should make it an obect again and get its keys and values.
function demo(){
var string='{"C8_235550":{"listing":"aut,C8_235550_220144650654"},"C8_231252":{"listing":"aut,C8_231252_220144650654"}}';
var ob = JSON.parse(string);
for(var propertyName in ob) {
Logger.log('first level key = '+propertyName);
Logger.log('fisrt level values = '+JSON.stringify(ob[propertyName]));
for(var subPropertyName in ob[propertyName]){
Logger.log('second level values = '+ob[propertyName][subPropertyName]);
}
}
}

What you have is an object, not an array. What you need to do is, use the
Object.keys()
method and obtain a list of keys which is the field names in that object. Then you could use a simple for loop to iterate over the keys and do whatever you need to do.

How can I store values from one array to another array using 'for' loop

I am trying to create number of arrays like _temp0[],_temp1[],_temp2[] so on and I want to store values of data[] in it.
so value of data[0] goes in array_temp0[] after splitting,
data[1] goes in _temp1[] and so on
to elaborate more-
If value of data[0] is string a,b,c
then array _temp0[] should be
_temp0[0]=a
_temp0[1]=b
_temp0[2]=c
I wrote this function
for(var k=0;k<data.length-1;k++)
{
window['_temp' + k] = new Array();
alert("actual data -- >"+data[k]);
'_temp'+k= data[k].split(',');
alert("data after split -- >"_temp[k]);
}
but it is not working, how do I solve it?

You can do the same using javascript objects. Here is an example of how to do it.
Create an object of name '_temp':
var _temp = {};
When you iterate through 'data' variable then, you can dynamically add attributes to it,say _temp['data0'], _temp['data1'] etc, and every attribute will be an array. For that, you need to write something like:
for(var k=0;k<data.length-1;k++)
{
_temp['data'+k] = data[k].split(',');
}
This will not create the variables identical to what you want. However, this is similar to what you want.

used
window['_temp'+k]= data[k].split(',');
instead of
'_temp'+k= data[k].split(',');
and it worked, thanks to go-oleg

json jquery filter javascript array

I have a json object array. I want to search the array and for each object, create a list of 'services' that is a comma-seperated list of all the keys which have a value of "yes".
The list of json objects with the services list is then displayed in html using jquery's each.
Its a large json file so I want to do it as efficiently as possible.
I already have the object's properties being accessed through jQuery's each (ie, obj.name)
-- so I think it should be possible to filter the services listed for each object using
jQuery's filter, and then display the key if the value is yes.
But it seems like a more efficient option would probably be to create a new javascript array, join the services with a value of yes and then add that variable to the html being
appended.
Im not sure which would be faster and so far havent been very successful at either... so any advice and examples would be very helpful.
Here's what the json array looks like:
[
{"name":"name1",
"service1":"y",
"service2":"y",
"service3":"n",
},
{"name":"name2",
"service1":"n",
"service2":"y",
"service3":"n",
},
];

If you just want to filter the array then use grep.
grep - Finds the elements of an array which satisfy a filter function. The original array is not affected.
http://api.jquery.com/jQuery.grep/

First off, delete trailing commas. Internet Explorer gets really, really confused by them. Anyway, I assume you don't want to "search" the array when you say "for each value"; you want to iterate through the array and parse it into a more usable list. The first method I'd suggest is just passing what you want as the array you desire, but if that's not an option, what you're looking for is some variant of this, which should be fairly efficient (jsFiddle example):
var json = [
{"name":"name1", "service1":"y", "service2":"y", "service3":"n"},
{"name":"name2", "service1":"n", "service2":"y", "service3":"n"}
];
var parsed = {};
for (var i = 0, iLen = json.length; i < iLen; i++) {
// Assuming all we need are the name and a list
var name;
var list = [];
for (var key in json[i]) {
var value = json[i][key];
// We need to hold on to the name or any services with value "y"
if (key === "name") {
name = value;
} else if (value === "y") {
list.push(key);
}
}
// Add them to the parsed array however you'd like
// I'm assuming you want to just list them in plain text
parsed[name] = list.join(", ");
}
// List them on the web page
for (var key in parsed) {
document.write(key + ": " + parsed[key] + "<br>");
}
That way you wind up with a display to the visitor of the services available and still keep an array around for further use if necessary.

jQuery.inArray() Search for a specified value within an array and return its index (or -1 if not found).
http://api.jquery.com/jQuery.inArray/
Or
http://api.jquery.com/jQuery.each/

jQuery .getJSON return into array variable & json array manipulation

is there any way I can get the return of $.getJSON into a variable array?
I know its async and out of scope, but I will use it inside ajax callback, I just need to get all the values first and check them against another array.
Something like:
$.getJSON('itemManager.php?a=getItems', function(data){
// itemArray = new Array(data);
// idsArray = new Array(data.id);
for (var i in someOtherArray){
if($.inArray(i, idsArray) == -1){
// do something...
// get jason variable by id?
// itemArray[i].someVariable
}
}
}
EDIT: JSON structure
[{"id":"786","user_id":"1","seller_id":"2","address_id":"1","time":1299852115,"publicComment":null,"personalComment":null},
{"id":"787","user_id":"1","seller_id":"2","address_id":"1","time":1299852115,"publicComment":null,"personalComment":null},
{"id":"785","user_id":"1","seller_id":"2","address_id":"1","time":1299852114,"publicComment":null,"personalComment":null},
{"id":"784","user_id":"1","seller_id":"2","address_id":"1","time":1299852113,"publicComment":null,"personalComment":null},
{"id":"783","user_id":"1","seller_id":"2","address_id":"1","time":1299852111,"publicComment":null,"personalComment":null}]
This is basically the idea.
Get all the values
Isolate the id values of JSON objects
Loop another array
Check if json id is inside the other array
Access other json variables by id value
There are various solutions here I guess, but I'm looking for something with minimal code.

With the given information, there is not shortcut to test the existence of IDs. You really have to loop over everything. However you can improve a bit by creating an id => object mapping:
$.getJSON('itemManager.php?a=getItems', function(data){
var items = {};
for(var i = data.length; i--; ) {
items[data[i].id] = data[i];
}
for (var j = someOtherArray.length; j--; ){
var item = items[someOtherArray[j]];
if(item){
// do something with `item`
}
}
}
It woud be even better if you create this structure on the server already, then it would be:
$.getJSON('itemManager.php?a=getItems', function(data){
for (var j = someOtherArray.length; j--; ){
var item = data[someOtherArray[j]];
if(item){
// do something with `item`
}
}
}
You should also consider which arrays will contain more elements, data or someOtherArray and adjust your data structures such that you loop over the smaller array only.
Update:
To create the appropriate structure on the server with PHP, you have to create an associate array.
So at the point where you add an object to the array, you should not do
$items[] = $obj;
but
$items[$obj->id] = $obj; // or $obj['id'] if you have an array

If you get an array as your JSON response then your data variable in your callback is an array, no need to do anything with it.
If you get an object as your JSON response as the data.id in you example might suggest, and some of it's values is an array, then just use data.id as an array, or use var array = data.id; if that is more convenient for you.
Remember that data in your callback is just whatever you got as JSON. It can be an object (which is an associative array), an array, a string, a number, or a true, false or null value. If it is an object you access it using data.key, if it is an array you access it using data[index]. I say it because I suspect that you might be confusing arrays with objects here.

Setting an object to a split array

I'm not a javascript guru. I've got the following code below:
var aCookieValues = sCookieContentString.split('&'); // split out each set of key/value pairs
var aCookieNameValuePairs = aCookieValues.split('='); // return an array of each key/value
What I'm trying to do is split the first string via & and then create another array that takes the first array and splits it further via the = character that exists in every value in the aCookieValues array
I get the error aCookieValues.split is not a function.
I've seen an example that basically does the same thing but the second time this guy is using a loop:
(http://seattlesoftware.wordpress.com/2008/01/16/javascript-query-string/)
// '&' seperates key/value pairs
var pairs = querystring.split("&");
// Load the key/values of the return collection
for (var i = 0; i < pairs.length; i++) {
var keyValuePair = pairs[i].split("=");
queryStringDictionary[keyValuePair[0]] = keyValuePair[1];
}
Ultimately what I'm trying to achieve here is a final dictionary with key/value pairs based off the '=' split. I'm simply trying to split up a cookie's values and shove it into a nice dictionary so I can then get certain values out of that dictionary later on.

You are getting this error because aCookieValues is an array, and it does not have a split method. You would need to call the split method on each element of aCookieValues:
var aCookieValues = sCookieContentString.split('&');
for (var i = 0; i < aCookieValues.length; i++) {
var aCookieNameValuePairs = aCookieValues[i].split('=');
// Handle aCookieNameValuePairs[0] as the key
// Handle aCookieNameValuePairs[1] as the value
}
To shove everything in your nice dictionary, simply declare it before the for loop: var myDict = {}, and then put the following after the split('=') call:
myDict[aCookieNameValuePairs[0]] = aCookieNameValuePairs[1];
EDIT: Which, after reading your question properly, is the same method used in the code snippet you supplied. I hope at least this explains how that works :)

In your second line you are attempting to call split() on an array, when it is a function defined on strings.
Example:
"a=1&b=2&c=3".split('&') returns an array ['a=1','b=2','c=3']
Your code would then call split on the array:
['a=1','b=2','c=3'].split('=')
But that function doesn't exist. It seems like your goal is to split each string in the array, so the example you gave in the question seems appropriate - loop through each element and split it.

split operates on a string. You're trying to split aCookieValues, which is an array. The example you cite is looping through the array, and then splitting each element as a string.
Just for fun, one way to deal with this would be to use a map function, which performs an action on each element of an array, and emits an array as a result. If you make a generic map function available to all your arrays, like this:
if (!Array.prototype.map) { // don't step on anyone's toes
Array.prototype.map = function( f ) {
var result = [];
var aLen = this.length;
for( x = 0 ; x < aLen ; x++ ) {
result.push( f(this[x]) );
}
return result;
};
};
...you can call it as a method on your array directly. Thus:
​yourstring = 'x=3&y=4&zed=blah&something=nothing';
dictionary = yourstring.split('&').map( function(a){ return a.split('='); } );
dictionary will now be a nice clean array of (arrays of) name/value pairs, like this:
[["x", "3"], ["y", "4"], ["zed", "blahblah"], ["something", "nothing"]]
If your use case becomes complex, an approach like this can be a nice abstraction. Of course, you can arrange these data in other structures if needed, either by playing with a function passed into map, or processing in a separate pass.