query javascript object

Question

Ive got a JSON string coming over and being assinged to a javascript object

{
   "results":[
      {
        "id":"460",
        "name":"Widget 1",
        "loc":"Shed"
      },{
        "id":"461",
        "name":"Widget 2",
        "loc":"Kitchen"
      }]
}

Is there a way to "query" this data in javascript so I could search for an ID of 460 and get name and loc returned (other than just looping through the whole object)? I've got jQuery and Prototypejs available to use.

Answer 1

function getInfoByID( id )
  var object = { ... };
  for(var x in object.results) {
    if(object.results[x].id == id) {
      return [object.results[x].loc, object.results[x].name];
    }
  }
}

Answer 2

DEMO

JavaScript arrays have a built-in filter method:

var valuesWith460 = obj.results.filter(function(val) {
    return val.id === "460";
});

(to support older browsers you'll want to grab the shim from the link above)