Adding empty key, value pair to javascript object

Question

How can I add empty (key,value) pair to an existing object. suppose I have an object as

var map = {
    "name": "x"
};

How can I get below output

var map = {
    "name": "x",
    "": ""
};

I am looking for similar to push function in case of array.

Answer 1

You just need to use the [] operator, like that :

var map = {
    "name": "x"
};

map[""] = "";