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+====== JSON functions ======
+I quite often find myself storing JSON representations of objects in files.
+In order to simplify the coding slightly, I decided to write a couple of very simple functions.
+<code JavaScript funcs.js>
+function writeAsJson(path,obj)
+{
+    app.WriteFile(path,JSON.stringify(obj));
+}
+function readAsJson(path)
+{
+    if (app.FileExists(path))
+      return JSON.parse(app.ReadFile(path));
+    app.ShowPopup(path+" does not exist");
+    return undefined;
+}
+</code>
+These can be used in an app like this
+<code JavaScript funcsdemo.js>
+//Called when application is started.
+function OnStart()
+{
+    //Create a layout with objects vertically centered.
+    var lay = app.CreateLayout( "linear", "VCenter,FillXY" );
+    //Create a text label and add it to layout.
+    var txt = app.CreateText( "Hello" );
+    txt.SetTextSize(32);
+    lay.AddChild( txt );
+    //Add layout to app.
+    app.AddLayout( lay );
+    test(txt);
+}
+function test(display)
+{
+   // file to store data
+   var fil="/sdcard/jsontest.txt";
+   //build a test object
+   var stuff = {"value":1,"name":"one"};
+   //save object in a file
+   writeAsJson(fil,stuff);
+   //get copy of the object from the file
+   var newobj = readAsJson(fil);
+   //display data from the copy
+   display.SetText(newobj.name +" is "+ newobj.value);
+}
+function writeAsJson(path,obj)
+{
+    app.WriteFile(path,JSON.stringify(obj));
+}
+function readAsJson(path)
+{
+    if (app.FileExists(path))
+      return JSON.parse(app.ReadFile(path));
+    app.ShowPopup(path+" does not exist");
+    return undefined;
+}
+</code>

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