//my json data
var jsndata = \"{ \"id\": \"5001\", \"type\": \"None\" },
{ \"id\": \"5002\", \"type\": \"Glazed\" },
{ \"id\": \"5005\",
try this. simplified.
var json = [{ "id": "5001", "type": "None" },
{ "id": "5002", "type": "Glazed" },
{ "id": "5005", "type": "Sugar" },
{ "id": "5003", "type": "Chocolate" },
{ "id": "5004", "type": "Maple" },
{ "id": "5009", "type": "Juice" }];
var JsonObject= JSON.parse(json);
$.each(JsonObject, function(key,value) {
if( JsonObject[key].id=='5005' ){
JsonObject[key].id='1234';
}
if( JsonObject[key].type=='Chocolate' ){
JsonObject[key].type='Only water';
}
});