更新 sessionStorage 中对象的值

Question

我有这个对象存储在会话存储中：

0: {FromName: "FName", FromLastName: "", FromAddress: "F Street", FromCountry: "Portugal", FromCity: "FC",…}
1: {FromName: "FName", FromLastName: "", FromAddress: "F Street", FromCountry: "Portugal", FromCity: "FC",…}
2: {FromName: "", FromLastName: "", FromAddress: "", FromCountry: "", FromCity: "", FromPostCode: "",…}

它显示购物车项目列表。

当我在购物车中时，我有一个按钮，可以让我在表单中显示值，并且它已经从 sessionStorage 中获取了正确的值。

问题是，如何正确使用显示的表单和更新的对象来更新值？

这是从会话存储中的对象中获取正确值的代码：

  e.preventDefault();

  var itemsInCart = JSON.parse(sessionStorage.getItem('productList'));
  var ID = $(this).data('id');

  for (var i = 0; i < itemsInCart.length; i++) {

    var itemsinCartID = itemsInCart[i].keyID;

    if (ID == itemsinCartID) {

    $('.product-image').attr('src', itemsInCart[i].Product);
    $('#message').val(itemsInCart[i].Message);

    // from inputs
    var fromName = $('#from-name-input').val(itemsInCart[i].FromName);
    var fromLastName = $('#from-last-name-input').val(itemsInCart[i].FromLastName);
    var fromAddress = $('#from-address-input').val(itemsInCart[i].FromAddress);
    var fromCountry = $('#from-country-input').val(itemsInCart[i].FromCountry);
    var fromCity = $('#from-city-input').val(itemsInCart[i].FromCity);
    var fromPostCode = $('#from-postalcode-input').val(itemsInCart[i].FromPostCode);
    var fromPhone = $('#from-phone-input').val(itemsInCart[i].FromPhone);

    // to inputs
     var toName = $('#to-name-input').val(itemsInCart[i].ToName);
     var toLastName = $('#to-last-name-input').val(itemsInCart[i].ToLastName);
     var toAddress = $('#to-address-input').val(itemsInCart[i].ToAddress);
     var toCountry = $('#to-country-input').val(itemsInCart[i].ToCountry);
     var toCity = $('#to-city-input').val(itemsInCart[i].ToCity);
     var toPostCode = $('#to-postalcode-input').val(itemsInCart[i].ToPostCode);
     var toPhone = $('#to-phone-input').val(itemsInCart[i].ToPhone);
    break;
    }
  }

});

这是上面的代码填写的表格：

然后我想使用点击表单中的“编辑消息”按钮来更新我在表单中更改的新值。

Answer 1

如果我理解正确的话。您想用表单中的新项目更新 sessionStorage 项目。是的？ 我会考虑将代码更改为：

const tempObject = {
  FromName: $('#from-name-input').val(itemsInCart[i].FromName),
  FromLastName = $('#from-last-name-input').val(itemsInCart[i].FromLastName)
}
Object.assign(itemsInCart, tempObject)
sessionStorage.setItem('productList', JSON.strigify(itemsInCart));