I have stored some data as a JSON. Data is coming dynamically. Even the key name could be changed.

var str = {
  "Product_row_1": {
    "Number_of_Students": {
      190: 191
    },
    "Price": {
      240.0000: 230.0000
    },
    "Total_Old": {
      "45.00000": "43.00000"
    }
  },
  "Cost": {
    45.00: 43.00
  },
  "Cost_after": {
    45.00: 43.00
  },
  "Total": {
    45.00: 43.00
  },
  "Cover_Letter": {
    "<div>Hello<\/div>": ""
  },
  "Additional_Information": {
    "<div>Hell No<\/div>": ""
  }
}

Now I want to access it's all keys and values. I'm trying JSON.parse() but it's giving error "Unexpected number in JSON at position 40". I tried this with $.getJSON(Json, function (key, value).That's also not working.

Can someone please help ? I just want to access each key, value and inside JSON ( {"Product_row_1":{"aa":"bb"}} ) as well.