A simple JS snippet to add product to the cart using Ecwid Javascript API

ecwid_add_product.js

var product = {
  id: 10,
  quantity: 3,
  options: {
    someTextOption: "optionVal",
    someDateOption: new Date().getTime().toString(),
    someRadioOption: "optionVal",
    someDropDownOption: "optionVal",
    someCheckboxOption: ["optionVal1", "optionVal2"]
  },
  callback: function(success, product, cart) {
    // ...  
  }
}

Ecwid.Cart.addProduct(product);