JSON to dictionary in JavaScript?

Question

In my JS code, I need to convert the JSON response from server to a dictionary so that I can access them by key names. Here is the situation:

Say, this is the JSON r

Answer 1

Note that that is not valid JSON: you have to use double-quotes, not single-quotes.

Assuming you fix that, and that the JSON has already been retrieved into a string variable jsonResult, you need to parse that to get an object using JSON.parse():

var result = JSON.parse(jsonResult);

You can build a dictionary from there:

var employees = {};

for (var i = 0, emp; i < result.employees.length; i++) {
   emp = result.employees[i];
   employees[ emp.id ] = emp;
}

console.log(employees[56].name);       // logs "Harry"
console.log(employees[56].department); // logs "marketing"

You said "and the value is the (say) name" - if you don't need the department values then in the for loop above say employees[ emp.id ] = emp.name; and then (obviously) employees[56] would give you "Harry" directly.

Demo: http://jsfiddle.net/RnmFn/1/