how to create json file from google sheets ?

after i want auto update or 10-20-30 min update from sheets

site. com/country.json and

i want json structure in my site :

var country_data = 
{"Canada": {
"15-02-2014": 15.417,
"30-03-2014": 56.417  }, 

"NO": {
"15-02-2014": 15.417,
"30-03-2014": 30.417  }, 

"SW": {
"15-02-2014": 15.417,
"30-03-2014": 39.417  }, 

"SP": {
"15-02-2014": 15.417,
"30-03-2014": 89.417  }, 

"UK": {
"15-02-2014": 15.417,
"30-03-2014": 13.417  }, 

"IT": {
"15-02-2014": 15.417,
"30-03-2014": 65.417  }, 

"GR": {
"15-02-2014": 15.417,
"30-03-2014": 44.417  }, 
"Ge": {
"15-02-2014": 15.417,
"30-03-2014": 97.607  }, 
 "SE": {
"15-02-2014": 15.417,
"30-03-2014": 98.417  }, 
 "USA": {
"15-02-2014": 15.417,
"30-03-2014": 99.417 }}

or

i want replace code in datatables/highcharts how to replace json data on datatables? ( I want google sheets )

please help all :) thanks !