How to work with json correctly?

Question

JavaScript

There is a file with streams json/liveu.json
{ "streams" : {
"stream1": { "alive" : 0, "iframe" : "address?id-1 " },
"stream2": { "alive" : 1, "iframe" : "address?id-2" },
}
Please tell me how to display them in ifreme or another player, so that when the video is available it will show one picture, when another is not available.
alive = active and inactive stream.

Answer 1

var a = {"streams": {
    "stream1": {"alive":0, "iframe":"адрес?id-1"},
    "stream2": {"alive":1, "iframe":"адрес?id-2"},
    "stream3": {"alive":1, "iframe":"адрес?id-3"}
  }}

  var res = [];
  for (k in a.streams) {
    // перебираем a.streams по ключам
    if (a.streams[k].alive == 1) {
      console.log('активно');
      res.push(a.streams[k]); // собираем массив с alive  == 1
    } else {
      console.log('не активно');
    }
  }
  console.log(res[0]); // выводим первое значение из массива с alive  == 1

Answer 2

How to draw a conclusion you decide for yourself, because it very much depends on the specific player and so on.
JSON can be converted to a regular object using the JSON.parse() function:
https://developer.mozilla.org/en/docs/Web/JavaScri...
Example:

var json_data = '{ "streams" : { "stream1": { "alive" : 0, "iframe" : "адрес?id-1 " }, "stream2": { "alive" : 1, "iframe" : "адрес?id-2" },}';

var data = JSON.parse(json_data);

// теперь в переменной дата обычный объект