我有一些物品，我通過將它們與它們的 ID 一起存儲在 localStorage 中來添加到購物車。$(document).on('click', '.set-cart-info', function () {    // We retrieve the product id which is stored in the url    var url_id = window.location.search;    var id = url_id.split('?id=').pop();    // We retrieve the data from the localStorage    var cartItems = localStorage.getItem('teddy_id');    // If there is no data, we create an array    cartItems = cartItems ? cartItems.split(',') : [];    // Add the new data to the array    cartItems.push(id);    // We save the data in the localStorage    localStorage.setItem('teddy_id', cartItems.toString());});在 console.log 我得到這個：localStorage.getItem('teddy_id')"5beaacd41c9d440000a57d97,5beaabe91c9d440000a57d96,5beaabe91c9d440000a57d96,5beaaa8f1c9d440000a57d95,5beaabe91c9d440000a57d96,5beaaa8f1c9d440000a57d95,5beaabe91c9d440000a57d96,5beaacd41c9d440000a57d97,5beaaa8f1c9d440000a57d95,5beaaa8f1c9d440000a57d95,5beaaa8f1c9d440000a57d95,5beaabe91c9d440000a57d96,5beaacd41c9d440000a57d97,5beaacd41c9d440000a57d97,5beaacd41c9d440000a57d97,5beaacd41c9d440000a57d97,5beaacd41c9d440000a57d97,5beaaa8f1c9d440000a57d95"然后，我添加了通過檢索產品 ID 并將其添加到 localStorage 來添加或刪除產品數量的可能性，我的問題如下：當我檢索 ID 以在 localStorage 中獲取它時，它會刪除所有項目這個 ID，我希望它只刪除一個。這是允許添加數量的代碼，以及應該修改的代碼，以便它也只刪除一個：$(document).on('click', '.add_qty', function () {    // We retrieve the product id which is stored in the class    var split_class = this.className.split(' ');    var this_id = split_class[1];    var cartItems = localStorage.getItem('teddy_id');    cartItems = cartItems ? cartItems.split(',') : [];    cartItems.push(this_id);    localStorage.setItem('teddy_id', cartItems.toString());});$(document).on('click', '.remove_qty', function () {    // We retrieve the product id which is stored in the class    var split_class = this.className.split(' ');    var this_id = split_class[1];    var cartItems = localStorage.getItem('teddy_id');    cartItems = cartItems ? cartItems.split(',') : [];});