Json string values in javascript

Question

I have following JSON string in a global variable in Javascript

var domains = {
    "DomID00001": {
        "ID":"DomID00001",
        "Name":"Testdomein1"
    },
    "DomID00002": {
        "ID":"DomID00002",
        "Name":"Testdomein2"
    }
};

What is the best way to retrieve the values from this JSON string and be able to use them in Javascript individually?

If I just alert the domains var it says = [object Object]

Answer 1

Using alert() will not show you objects, this is one of the big advantages of the console. Check this fiddle and use the console (pressing F12 on your browser). Then you understand how to refer to what is inside that object.

var domains = {"DomID00001":{"ID":"DomID00001","Name":"Testdomein1"},"DomID00002":{"ID":"DomID00002","Name":"Testdomein2"}};

console.log(domains);
console.log(domains.DomID00001);
console.log(domains.DomID00001.ID);

Answer 2

Since the keys are variable, you should probably use a for..in loop:

for( domid in domains) if( domains.hasOwnProperty(domid)) {
    console.log(domid,domains[domid].ID,domains[domid].Name);
}