Question

I an working in javascript and stuck in understanding the objects.
Here is my scenario.

I have an object which in turn has multiple objects in it like.

data {
"aa" : object
"bb" : object
"cc" : object
}

//expanding aa bb and cc

aa {
name : "a"
type : "static"
value : "123"
}

bb {
name : "b"
type : "dyn"
value : "343"
}

cc {
name : "c"
type : "dyn"
value : "545"
}

Now what I want to achieve is that i have an object which should have those objects that have type = “dyn”
so i want to have a reqdata object like this

reqdata {
"bb" : object
"cc" : object
}

I have written a code to do this but it is not working as my reqdata has all the data.

   var reqData = $.each (data, function(key, d){
        if (type === "dyn")
            return d;                             
        });

Can any one guide me what the proper and efficient way of looping through the object.

Thanks any help and guidance will be appreciated

Answer 1

You need to create a new object, test the type property, and assign the current sub-object to the new one if the type is what you want.

          // v--- Holds the results
var newObj = {};
                       //   v--- The current sub-object
$.each(data, function(key, obj){
    if (obj.type === "dyn") // <-- Test its `type` property
        newObj[key] = obj;  // <--   and assign to `newObj` if it matches
});

You should note that you’re not making a copy of obj when you assign it to newObj. You’re making a copy of a reference to obj.

This means that data and newObj share the same objects. Changes made via data are observable from newObj, and vice versa.