deep copy example.js

deepCopyExample() {
    let product = {
      name: 'beef',
      price: 10,
      category: {
        name: 'food',
        type: 'meat'
      }
    };
    let deepCopyOfProduct = JSON.parse(JSON.stringify(product));
    console.log('[deepCopy] value before edit: ' + product.name);
    deepCopyOfProduct.name = 'Ross beef';
    console.log('[deepCopy] value after edit: ' + product.name);
  }