splitting json array in javascript not working

Parse the JSON string using JSON.parse method and get the property which holds the array.

var dates = JSON.parse(respose_data).checkin_date
// or
var dates = JSON.parse(respose_data)['checkin_date']

If it's an object then directly access the property.

var dates = respose_data.checkin_date
// or
var dates = respose_data['checkin_date']

UPDATE : And now iterate over the array using Array#forEach or a simple for loop.

dates.forEach(function(v){
   console.log(v);
})

// or
for(var i = 0;dates.length < i; i++){
   console.log(dates[i]);
})

You just use method parse of JSON. After that, you receive array value for property "checkin_date". Just use it as normal array. See code below:

var json = '{"checkin_date":["2017-05-11","2017-05-18","2017-05-23","2017-05-25"]}';
var result = JSON.parse(json);
var checkin_date = result['checkin_date'];
for(var i=0; i<checkin_date.length; i++){
  console.log(checkin_date[i]);
}

You can do a simple solution using arrow function:

const json = {"checkin_date":["2017-05-11","2017-05-18","2017-05-23","2017-05-25"]}

json.checkin_date.map((date) => date)

If you need it on pre-ES6 JavaScript, just do it like:

var json = {"checkin_date":["2017-05-11","2017-05-18","2017-05-23","2017-05-25"]}

json.checkin_date.map(function(date) { return date })

Both ways you will have returned all the dates from the loop.

You could:

• Parse content of your request to a JavaScript object using JSON.parse().
• Take property checkin_date which contains an Array with the list of dates.
• Loop the Array and do whatever you need which each date.

let respose_data = '{"checkin_date":["2017-05-11","2017-05-18","2017-05-23","2017-05-25"]}';
let dates = JSON.parse(respose_data).checkin_date;
dates.forEach(date=> console.log(date))

More info on JSON.parse()

If you need to loop through each value as a date, you first need to convert the values. Take a look:

var dates = {"checkin_date":["2017-05-11","2017-05-18","2017-05-23","2017-05-25"]};

dates
  .checkin_date
  .map(date => new Date(date)) // here you convert the string dates to values of type Date
  .forEach(date => console.log(date)) // here you loop through every Date and do whatever you want, in this case I just logged the output.