Array of objects iteration to get key and value

Question

I have an array of objects. I want to efficiently extract keys and its value out of it.

Example:

let data = [{'Car':'Honda'}, {'car':'Volvo'}];

I want car as key and its values separately. How I can achieve it in efficient manner (even using lodash)?

Expected output will be:

key : Car  value : Honda
key : car  value : Volvo

Answer 1

You can iterate over the array and access the key and the value of properties for each object in question.

let data = [{
  'Car': 'Honda',
  'hello': 'hi'
}, {
  'car': 'Volvo'
}];

data.forEach((obj) => {
	Object.keys(obj).forEach((key) => {
  		console.log("key : " + key + " - value : " + obj[key]);
  });
});

lodash snippet

let data = [{
  'Car': 'Honda',
  'hello': 'hi'
}, {
  'car': 'Volvo'
}];

_.forEach(data, (obj) => {
	_.forEach(Object.keys(obj), (key) => {
  		console.log("key : " + key + " - value : " + obj[key]);
  });
});

<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.10/lodash.core.min.js"></script>