get data from dynamic key value in json

Question

The requirement is following:
I have to get the location field from page.

var input= global.input = document.getElementById("Location");

Get the neighborhood area from the json file based on input and show on the page.

I have a json object and have to filter the data from the json object based on the key value (location)

var inputLocation=input.value;

In my javascript I am getting the error if I use dynamic the key.

I am able to get the json array if I do this data.Aspen but i have to get the data from a text field and it can be different so if I call data.inputLocation... its coming undefined

when i use data.(inputLocation.value) getting the following error :

XML filter is applied to non-XML value ({Aspen:[{ID:

{
 "Aspen":[
 {
  "ID":"Bellaire",
  "Name":"Bellaire"
 },
 {
  "ID":"Champions Forest",
  "Name":"Champions Forest"
 },
 {
  "ID":"Highland Village",
  "Name":"Highland Village"
 },
 {
  "ID":"Museum District",
  "Name":"Museum District"
 }
 ]
}

I can't understand what your problem is. You may try explaining yourself in a simpler way... give some examples. — Luca Matteis, Oct 05 '10 at 11:32
@ Luca Matteis Douglas has answered the question..Actually i was unknown to the syntax for getting the value from key.instead of data.(inputLocation.value) ,i used data[inputLocation] and the problem resolved. — AutoMEta, Oct 05 '10 at 11:41

Douglas · Accepted Answer · 2020-11-11T06:50:27.217

57

You can access the property using array-like syntax:

data[inputLocation]

If inputLocation is set to "Aspen", then it is the same as these two lines:

data["Aspen"]
data.Aspen

edited Nov 11 '20 at 06:50

answered Oct 05 '10 at 11:33

Douglas

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Saved my day. Thanks :) – पवन Jul 17 '17 at 06:19
2

What if we have dynamic locations ? Lets show it might be data[Name][Age], where both name and age can be dynamic. What do we do in that case ? – Sandip Subedi Jul 24 '17 at 20:48
Saved me a lot of time in fixing grunt uglify errors due to missing ES6 support. Thanks a lot! – Stefan Müller Sep 04 '17 at 20:25

Yasin Sunni · Answer 2 · 2019-03-05T11:31:14.223

get value from dynamic json object Using real time currency converter rest api responce

public async Task<JsonResult> ConvertCurrency(float Price, string FromCurrency)
{
    var testcase = FromCurrency + "_USD";
    WebClient web = new WebClient();
    const string ConverterApiURL = "http://free.currencyconverterapi.com/api/v5/convert?q={0}_{1}&compact=ultra&apiKey={{EnterKey}}";
    string url = String.Format(ConverterApiURL, FromCurrency, "USD");

    string response = new WebClient().DownloadString(url);

    var data = (JObject)JsonConvert.DeserializeObject(response);
    dynamic result = data.SelectToken(testcase + ".val").ToString();

    var basePrice = float.Parse(result);

    double exchangeRate = Price * basePrice;
    var responce = Math.Round(exchangeRate, 2);
    return Json(responce, JsonRequestBehavior.AllowGet);
}

Why have you posted a C# answer on a question asking about JS? Also even in C# what is the need to show how to use a specific API? You could have just said that there is a `SelectToken` method. — brc-dd, Aug 03 '21 at 06:21

get data from dynamic key value in json

2 Answers2

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