I would like to generate this array in a JavaScript file
var sports = [{ id: 1, value: "Baseball" },
{ id: 2, value: "Soccer" },
{ id: 3, value: "Basketball" },
{ id: 4, value: "Volleyball" },
{ id: 5, value: "Tennis" },
{ id: 6, value: "Running" },
{ id: 7, value: "Swimming" },
{ id: 8, value: "Tournament"}];
I have started with:
var sports = db.Sports;
But now I am stuck on how to include this in a JavaScript file. Does .net have embedded JavaScript file like Rails do?
You'll need to just retrieve the data and serialize it into javascript. If those two are the only columns, you can do a straight serialization with JavaScriptSerializer or JSON.NET. If not, you'll need to convert them, maybe something like (using JSON.NET):
var x = db.Sports.Select(s => new { id = s.id, value = s.value }).ToArray();
string json = JsonConvert.SerializeObject(x);
Once you have this JSON string, you can dump it onto a page however you want, or write it directly to the response.
If you need to know a specific way to do this part, we'd need more details (WebForms or MVC, inside a page or a separate javascript resource, etc.)
EDIT:
Adding it to the view once it's in the ViewBag is straightforward. Inside your script on the view:
var sports = #Html.Raw(ViewBag.Sports);
// or if you're not using Razor:
var sports = <%= ViewBag.Sports %>;
Since ViewBag.Sports is already properly serialized, you don't need to worry about quotation marks or brackets.
Related
I have a multidimensional array that I am creating from a JSON Ajax call to my DB.
With in my Web App, I am trying to dynamically add a new row to the array using javascript along the lines of:
list[new_row_id].item_id = new_value ;
list[new_id].item_title = new_title ;
Clearly I am doing something wrong.
Any guidance would be appreciated.
Adding an element to the end of an array is done with the push-function:
array.push({"item_id": 10101, "item_title": "new title"});
If you meant "new_id" and "new_row_id" to be the same and it differs from an index starting from 0, because the keys are individual database keys, then you can solve it that way:
var any_db_id = 33;
var new_title = 'new title';
list[any_db_id] = {
item_id: any_db_id,
title: new_title
}
That will result in a JSON looking like that:
{
1: {
item_id: 1,
title: 'Entry coming from database 1'
},
5: {
item_id: 5,
title: 'Entry coming from database 2'
},
33: {
item_id: 33,
title: 'new title'
}
}
If the new_id and new_row_id are still same but it is actually just an index (each item has 0, 1, 2 and so on as key), then you should use the solution of Virendra Katariya.
I'm still trying to find my way with AngularJS. I have a JavaScript code that uses URL to return JSON data as an array. I need help with populating the same data in select using ng-options.
data to populate on the select
This isn't how you ask for help, but nevermind. Given a JSON object like this
var JsonArray = [{
id: 1,
name: 'Jane',
address: 'Jane\'s house'
}, {
id: 2,
name: 'Jill',
address: 'Jill\'s house'
}, {
id: 3,
name: 'John',
address: 'John\'s house'
}, {
id: 4,
name: 'Jack',
address: 'Jack\'s house'
}];
When you want to use ng-select with ng-options, you need to specify 3 required fields :
your table
the name that every object will take (like a for ... each loop)
The property you want to see in your options
You also can specify a track by property to give your options a given value.
<select ng-model="mySelect" ng-options="object.name for object in JsonArray track by object.id"></select>
Now, use the last piece of code, and inspect it in a brwoser. You will understand everything.
For reference :
<select ng-model="mySelect" ng-options="[object].[chosenProperty] for [object] in [yourArray] track by [object].[property]"></select>
I have successfully implement type ahead using angular js using this codepen.
Now my data is dynamic so I want to create my own json that should looks something like following:
$scope.states = [
{
name: "ABCD",
id: "AB"
},
{
name: "XYZ",
id: "XY"
},
{
name: "OPQR",
id: "OP"
},
{
name: "LMNO",
id: "LM"
},
{
name: "KLM",
id: "KL"
}
];
How to create like above json and store in $scope variable so I can access it using name and id separately.
Please help me...!!
I am giving by my own now cause I got it little bit late.
Solution is I have pushed the data wrong I have solved it like:
$scope.states.push({
name: "string",
id: int,
});
and I got it.
I have a form which collects some information (asset cost, asset description, shareholders, and how much each of the shareholders own). I want to compile all this information in a JSON object and post it. When I collect the data and JSON.stringify() it, it looks like this:
[ { name: '1', value: '50' },
{ name: 'asset_desc', value: 'boat' },
{ name: 'asset_cost', value: '100' },
{ name: 'org_id', value: '2' },
{ name: '3', value: '50' },
{ name: 'asset_desc', value: 'boat' },
{ name: 'asset_cost', value: '100' },
{ name: 'org_id', value: '2' } ]
I want to clean this data up before posting so it looks like this:
{
"asset_desc": "boat",
"asset_cost": "100",
"org_id": 2,
"share_holders": {
"1": "50",
"2": "50"
}
}
I am running jQuery. Does jQuery have some built-in helpers that would make the cleaning up of this data simple? The function I'm using to get the data like this in the first place is:
formdata = $('#addpurchaseform');
data = JSON.stringify(formdata.serializeArray());
Is there a better way to do this so that my data is in a cleaner state? Am I even thinking about this correctly (I am new to web development)?
Not sure if this matters, but the receiving end of this is Python / Django so I figured it would be better if I sent a clean JSON object rather than trying to parse / clean the mess after it was received.
If you're looking for a jQuery plugin, then try this:
https://github.com/marioizquierdo/jquery.serializeJSON
I am working on a application which is nicely modularized using requirejs. One of the modules called data service is in charge of providing other modules with data. Pretty much all get* methods of this module return javascript script objects in the the following format:
res = {
totalRows: 537,
pageSize: 10,
page: 15,
rows: [
{
id: 1,
name: 'Angelina'
...
},
{
id: 2,
name: 'Halle'
...
},
{
id: 3,
name: 'Scarlet'
...
},
{
id: 4,
name: 'Rihanna'
...
},
{
id: 5,
name: 'Shakira'
...
},
....
//10 rows
{
id: 10,
name: 'Kate'
...
}
]
}
Is it possible to initialize the data table by providing it with rows for the current page, current page number, page size and the total number of records or pages so that it "knows" which page is currently being displayed as well as the number of available pages. Which in turn would allow the DT to build the pager correctly allowing the user to navigate to other pages in which case we would make another call to data service module to retrieve data from the database for the selected page.