How to take a specific info from a string in json format? - json

Question

I've got this AS3 code :
var myString:String;
var request:URLRequest = new URLRequest("http://www.swellmap.co.nz/ajr.php?r=plugin&a=Surfing&s=Anse%20Vata&country=nz&swellmap=1&country=ncd&swellmap=1&_=1460963404274");
var loader:URLLoader = new URLLoader();
loader.load(request);
loader.addEventListener(Event.COMPLETE,weatherLoaded);
function weatherLoaded(e:Event):void{
myString = e.target.data;
trace(myString); //output is {"tides":"High: 05:40 am (1.32 m); Low: 12:10 pm (0.57 m); High: 06:10 pm (1.19 m); ","seatemp":"27°C","forecastdate":"17h","rating":"<img src='http:\/\/www.swellmap.co.nz\/style\/img\/weathericons\/1r.png' alt='Poor conditions' title='Poor conditions' \/>","rating_class":"<span class='badge badge-important' alt='Poor conditions' title='Poor conditions'>1<\/span>","summary":"<img class='wx-summary' src='http:\/\/www.swellmap.co.nz\/style\/img\/weathericons\/suncloud.png' title='Sunny with some cloud' \/>","title":"Anse Vata","smaplink":"http:\/\/www.swellmap.co.nz\/surfing\/new-caledonia\/anse-vata","vars":{"hs_sw":{"value":"0.4","title":"Swell","unit":"m"},"hs":{"value":"0.6","title":"Wave","unit":"m"},"wface":{"value":"0.8","title":"Set face","unit":"m"},"tp":{"value":"13","title":"Period","unit":"s"},"dpm":{"value":"S","title":"Swell dir","unit":"°"},"windma":{"value":"E 12","title":"Wind","unit":"kts"},"gstma":{"value":"16","title":"Gusts","unit":"kts"}}}
var myData : Object = JSON.parse(e.target.data);
for each (var s:* in myData) { trace("key:",s,"value:",myData[s]); }
trace(myData); }
My String is containing lots of infos.
How could I take specifics informations ?
Exemple:
If I want to take the swell (in this example, the swell is : "0.4 m # 13 s"). How could I do that? (the purpose is to displays it in a text box like that :
function(searchTheSwell){
var swell_AnseVata;
swell_AnseVata =.... ?
info_txt.text = swell_AnseVata;
}
Thx

Answer 1

Just set a breakpoint after you parse the data and examine the myData in the debugger - you will see the object structure. Or just trace the whole object structure out:
import mx.utils.ObjectUtil;
trace(ObjectUtil.toString(myData));
In your case you'd need to put your string together out of the vars in your object:
var hs_sw:Object = myData.vars.hs_sw;
var tp:Object = myData.vars.tp;
trace(hs_sw.value + " " + hs_sw.unit + " # " + tp.value + " " + tp.unit);