Add to cart

To support add to cart:

Add an add-to-cart button in Plugin Studio.
Use the event hooks to add the product to your Shopify cart:

window['twn-starter-config'].on = {
	// ...,
  'twn.add-to-cart': function (event) {

    var formData = {
      'items': [{
        'id': event.data.itemno,
        'quantity': 1
      }]
    };

    fetch(location.protocol + '//' + location.host + '/cart/add.js', {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify(formData)
    })
      .then(response => { return response.json(); })
      .then(response => {

        location.href = '/cart'

        return response;
      })

  }

};

Note: this example redirects to the cart after succesfully adding the product

Add to wishlist

If your shop has a wishlist app, which has an API or JS SDK, this can be supported in Tweakwise JS:

Add a wishlist button in Plugin Studio.
Use the event hooks to add the product to your Shopify wishlist app:

window['twn-starter-config'].on = {
	// ...,
  'twn.add-to-favorites': function (event) {
    
    var productId = event.data.itemno;
		// actually call your wishlist app's sdk using productId

  }
};