jQuery

Question

我有一个 select 菜单，可让您选择首选的送货国家/地区。当您 select 一个选项时，它会在下方显示相关国家/地区。

我正在尝试使用 js-cookie 设置 cookie，以便用户始终记住最后一个 selection。到目前为止，这是我所拥有的，但它不起作用：

$('#country').change(function() {
  $('.box').hide();
  var $countrycode = $('#delivery' + $(this).val());
  if( Cookies !== undefined && Cookies.get('deliveryOption') == undefined  ){
    Cookies.set('deliveryOption', $countrycode);
  } else {
    $('#delivery' + $(this).val()).show();
  }
}).trigger('change');

我想将 select 选项的值存储为 cookie，然后使用相同的值显示各个国家/地区的信息。这是当前存储的 cookie，看起来不正确：

{%220%22:{%22jQuery112405649891521717818%22:9}%2C%22length%22:1%2C%22context%22:{%22location%22:{%22href%22:%22https://zed-labz.myshopify.com/pages/delivery%22%2C%22ancestorOrigins%22:{}%2C%22origin%22:%22https://zed-labz.myshopify.com%22%2C%22protocol%22:%22https:%22%2C%22host%22:%22zed-labz.myshopify.com%22%2C%22hostname%22:%22zed-labz.myshopify.com%22%2C%22port%22:%22%22%2C%22pathname%22:%22/pages/delivery%22%2C%22search%22:%22%22%2C%22hash%22:%22%22}%2C%22mc-embedded-subscribe-form%22:{%220%22:{}%2C%221%22:{}}}%2C%22selector%22:%22#deliverycountry1%22}

Answer 1

一些问题：

您保存了一个 jQuery 集合，因为 $countrycode 不是值：
```
var $countrycode = $('#delivery' + $(this).val());
```
您永远不会从 cookie 中获取值来设置选择

这里是更正后的代码：

$(function () {
    $('#country').change(function() {
        $('.box').hide();
        if( Cookies ) {
            Cookies.set('deliveryOption', $(this).val());
        }
        $('#delivery' + $(this).val()).show().siblings().hide();
    });
    // On page load, read out the cookie, and select the corresponding country
    // If no cookie, take country1 as default
    var country = Cookies && Cookies.get('deliveryOption') || 'country1';
    $('#country').val(country).trigger('change');
})

在the corrected fiddle中查看。

jQuery - 从 select 菜单设置和检索 cookie

jQuery - Set and retrieve cookie from select menu

cookies

select

js-cookie