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up vote 3 down vote favorite
1

I need to convert this json object:

"forms":
        {
            "Circle":
            {
                "color" : "red",
                "size" : "1"
            },
            "Square":
            {
                "color" : "blue",
                "size" : "3"
            },
            "triangle":
            {
                "color" : "black",
                "size" : "4"
            }
        }

Into an javascriptArray. The array should contain formType, color and size. I have created the following script

var formsArr=[]; 
$.each(forms, function(i, obj){ var form={color: obj.color, size: obj.size};
                formsArr.push(form);

The array only contains color and size. I want it to also containt formType ie. Circle, how can I get the key?

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up vote 8 down vote accepted

Here's a way to do it:

var forms = {
  "Circle": {
    "color" : "red",
    "size" : "1"
  },
  "Square": {
    "color" : "blue",
    "size" : "3"
  },
  "triangle": {
    "color" : "black",
    "size" : "4"
  }
};

var result = Object.keys(forms).map(function(key) {
  return { type: key, color: this[key].color, size: this[key].size };
}, forms);

With jQuery:

var result = $.map(forms, function(val, key) {
  return { type: key, color: val.color, size: val.size };
});
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