how to convert json values in comma separated string using javascript

Question

I have following JSON string :

{"name":"Marine Lines","location_id":3},{"name":"Ghatkopar","location_id":2}

I want location_id as

3,2

Answer 1

Simple:

var data = [{"name":"Marine Lines","location_id":3},{"name":"Ghatkopar","location_id":2}]
var result = data.map(function(val) {
  return val.location_id;
}).join(',');

console.log(result)

I assume you wanted a string, hence the .join(','), if you want an array simply remove that part.

Answer 2

You could add brackets to the string, parse the string (JSON.parse) and map (Array#map) the property and the join (Array#join) the result.

var string = '{"name":"Marine Lines","location_id":3},{"name":"Ghatkopar","location_id":2}',
    array = JSON.parse('[' + string + ']'),
    result = array.map(function (a) { return a.location_id; }).join();

console.log(result);