[рони]

CryNet,

var data = {
  "1": {
    "title":"My Lesons",
    "autor":"CryNet",
    "date":"10.01.19",
    "text":"Текст"
  },

  "2": {
    "title":"My articles",
    "autor":"CryNet",
    "date":"09.01.19",
    "text":"Текст текст"
  }

}
var index = Object.keys.length;
data[index] = { "title": head,
    "autor": autor,
    "date": date,
    "text": text}