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2018 U.S. Flag Forever Stamps

$44.09  - $359.99
class SpzCustomDiscountFlashsale extends SPZ.BaseElement { constructor(element) { super(element); this.xhr_ = SPZServices.xhrFor(this.win); this.getFlashSaleApi = "\/api\/storefront\/promotion\/flashsale\/display_setting\/product_setting"; this.timer = null; this.variantId = "b6c2d4c2-64cf-410c-8e43-5678c76a42fa"; // 促销活动数据 this.flashsaleData = {} } isLayoutSupported(layout) { return layout == SPZCore.Layout.CONTAINER; } buildCallback() { this.templates_ = SPZServices.templatesForDoc(); this.viewport_ = this.getViewport(); // 挂载bind函数 解决this指向问题 this.render = this.render.bind(this); this.resize = this.resize.bind(this); this.switchVariant = this.switchVariant.bind(this); } mountCallback() { // 获取数据 this.getData(); this.element.onclick = (e) => { const cur = this.win.document.querySelector(".app_discount_flashsale_desc"); if (this.flashsaleData.product_setting.is_redirection && appDiscountUtils.inProductBody(this.element) && e.target !== cur) { this.win.open(`/promotions/discount-default/${this.flashsaleData.discount_info.id}`); } } // 绑定 this.viewport_.onResize(this.resize); // 监听子款式切换，重新渲染 this.win.document.addEventListener('dj.variantChange', this.switchVariant); } unmountCallback() { // 解绑 this.viewport_.removeResize(this.resize); this.win.document.removeEventListener('dj.variantChange', this.switchVariant); // 清除定时器 if (this.timer) { clearTimeout(this.timer); this.timer = null; } } resize() { if (this.timer) { clearTimeout(this.timer) this.timer = null; } this.timer = setTimeout(() => { this.render(); }, 200) } switchVariant(event) { const variant = event.detail.selected; if (variant.product_id == '67dcffb1-9b55-4684-b9f2-bdf38a731226' && variant.id != this.variantId) { this.variantId = variant.id; this.getData(); } } getData() { const reqBody = { product_id: "67dcffb1-9b55-4684-b9f2-bdf38a731226", product_type: "default", variant_id: this.variantId } this.flashsaleData = {}; this.win.fetch(this.getFlashSaleApi, { method: "POST", body: JSON.stringify(reqBody), headers: { "Content-Type": "application/json" } }).then(async (response) => { if (response.ok) { this.flashsaleData = await response.json(); this.render(); } else { this.clearDom(); } }).catch(err => { this.clearDom(); }); } clearDom() { const children = this.element.querySelector('*:not(template)'); children && SPZCore.Dom.removeElement(children); } render() { this.templates_ .findAndRenderTemplate(this.element, { isMobile: appDiscountUtils.judgeMobile(), isRTL: appDiscountUtils.judgeRTL(), inProductDetail: appDiscountUtils.inProductBody(this.element), flashsaleData: this.flashsaleData, image_domain: this.win.SHOPLAZZA.image_domain, }) .then((el) => { this.clearDom(); this.element.appendChild(el); }) } } SPZ.defineElement('spz-custom-discount-flashsale', SpzCustomDiscountFlashsale);
/** * 优惠码组件模型类 * 处理优惠码的显示和交互逻辑 */ class SpzCustomDiscountCodeModel extends SPZ.BaseElement { constructor(element) { super(element); // 复制按钮和内容的类名 this.copyBtnClass = "discount_code_btn" this.copyClass = "discount_code_value" } isLayoutSupported(layout) { return layout == SPZCore.Layout.LOGIC; } buildCallback() { // 初始化服务 this.action_ = SPZServices.actionServiceForDoc(this.element); this.templates_ = SPZServices.templatesForDoc(this.element); this.xhr_ = SPZServices.xhrFor(this.win); } /** * 渲染优惠码组件 * @param {Object} data - 渲染数据 */ doRender_(data) { return this.templates_ .findAndRenderTemplate(this.element, Object.assign(this.getDefaultData(), data) ) .then((el) => { this.clearDom(); this.element.appendChild(el); // 绑定复制代码功能 this.copyCode(el, data); }); } /** * 获取渲染模板 * @param {Object} data - 渲染数据 */ getRenderTemplate(data) { const renderData = Object.assign(this.getDefaultData(), data); return this.templates_ .findAndRenderTemplate(this.element, renderData) .then((el) => { this.clearDom(); return el; }); } /** * 清除DOM内容 */ clearDom() { const children = this.element.querySelector('*:not(template)'); children && SPZCore.Dom.removeElement(children); } /** * 获取默认数据 * @returns {Object} 默认数据对象 */ getDefaultData() { return { isMobile: appDiscountUtils.judgeMobile(), isRTL: appDiscountUtils.judgeRTL(), image_domain: this.win.SHOPLAZZA.image_domain, copyBtnClass: this.copyBtnClass, copyClass: this.copyClass } } /** * 复制优惠码功能 * @param {Element} el - 当前元素 */ copyCode(el) { const copyBtnList = el.querySelectorAll(`.${this.copyBtnClass}`); if (copyBtnList.length > 0) { copyBtnList.forEach(item => { item.onclick = async () => { // 确保获取正确的元素和内容 const codeElement = item.querySelector(`.${this.copyClass}`); if (!codeElement) return; // 获取纯文本内容 const textToCopy = codeElement.innerText.trim(); // 尝试使用现代API，如果失败则使用备用方案 try { if (navigator.clipboard && navigator.clipboard.writeText) { await navigator.clipboard.writeText(textToCopy); } else { throw new Error('Clipboard API not available'); } // 显示复制成功提示 this.showCopySuccessToast(textToCopy, el); } catch (err) { console.error('Modern clipboard API failed, trying fallback...', err); // 使用备用复制方案 this.fallbackCopy(textToCopy, el); } const discountId = item.dataset["discountId"]; // 是否跳转落地页配置 const redirection = item.dataset["redirection"] === "true"; // 跳转到落地页 if (redirection && appDiscountUtils.inProductBody(this.element)) { this.win.open(`/promotions/discount-default/${discountId}`); } } }) } } /** * 使用 execCommand 的复制方案 * @param {string} codeText - 要复制的文本 * @param {Element} el - 当前元素 */ fallbackCopy(codeText, el) { const textarea = this.win.document.createElement('textarea'); textarea.value = codeText; // 设置样式使文本框不可见 textarea.style.position = 'fixed'; textarea.style.left = '-9999px'; textarea.style.top = '0'; // 添加 readonly 属性防止移动端虚拟键盘弹出 textarea.setAttribute('readonly', 'readonly'); this.win.document.body.appendChild(textarea); textarea.focus(); textarea.select(); try { this.win.document.execCommand('copy'); // 显示复制成功提示 this.showCopySuccessToast(codeText, el); } catch (err) { console.error('Copy failed:', err); } this.win.document.body.removeChild(textarea); } /** * 创建 Toast 元素 * @returns {Element} 创建的 Toast 元素 */ createToastEl_() { const toast = document.createElement('ljs-toast'); toast.setAttribute('layout', 'nodisplay'); toast.setAttribute('hidden', ''); toast.setAttribute('id', 'discount-code-toast'); toast.style.zIndex = '1051'; return toast; } /** * 挂载 Toast 元素到 body * @returns {Element} 挂载的 Toast 元素 */ mountToastToBody_() { const existingToast = this.win.document.getElementById('discount-code-toast'); if (existingToast) { return existingToast; } const toast = this.createToastEl_(); this.win.document.body.appendChild(toast); return toast; } /** * 复制成功的提醒 * @param {string} codeText - 要复制的文本 * @param {Element} el - 当前元素 */ showCopySuccessToast(codeText, el) { const $toast = this.mountToastToBody_(); SPZ.whenApiDefined($toast).then(toast => { toast.showToast("Discount code copied !"); this.codeCopyInSessionStorage(codeText); }); } /** * 复制优惠码成功后要存一份到本地存储中，购物车使用 * @param {string} codeText - 要复制的文本 */ codeCopyInSessionStorage(codeText) { try { sessionStorage.setItem('other-copied-coupon', codeText); } catch (error) { console.error(error) } } } // 注册自定义元素 SPZ.defineElement('spz-custom-discount-code-model', SpzCustomDiscountCodeModel);
/** * Custom discount code component that handles displaying and managing discount codes * @extends {SPZ.BaseElement} */ class SpzCustomDiscountCode extends SPZ.BaseElement { constructor(element) { super(element); // API endpoint for fetching discount codes this.getDiscountCodeApi = "\/api\/storefront\/promotion\/code\/list"; // Debounce timer for resize events this.timer = null; // Current variant ID this.variantId = "b6c2d4c2-64cf-410c-8e43-5678c76a42fa"; // Store discount code data this.discountCodeData = {} } /** * Check if layout is supported * @param {string} layout - Layout type * @return {boolean} */ isLayoutSupported(layout) { return layout == SPZCore.Layout.LOGIC; } /** * Initialize component after build */ buildCallback() { this.templates_ = SPZServices.templatesForDoc(); this.viewport_ = this.getViewport(); // Bind methods to maintain context this.render = this.render.bind(this); this.resize = this.resize.bind(this); this.switchVariant = this.switchVariant.bind(this); } /** * Setup component when mounted */ mountCallback() { this.getData(); // Add event listeners this.viewport_.onResize(this.resize); this.win.document.addEventListener('dj.variantChange', this.switchVariant); } /** * Cleanup when component is unmounted */ unmountCallback() { this.viewport_.removeResize(this.resize); this.win.document.removeEventListener('dj.variantChange', this.switchVariant); // 清除定时器 if (this.timer) { clearTimeout(this.timer); this.timer = null; } } /** * Handle resize events with debouncing */ resize() { if (this.timer) { clearTimeout(this.timer) this.timer = null; } this.timer = setTimeout(() => { if (appDiscountUtils.inProductBody(this.element)) { this.render(); } else { this.renderSkeleton(); } }, 200); } /** * Handle variant changes * @param {Event} event - Variant change event */ switchVariant(event) { const variant = event.detail.selected; if (variant.product_id == '67dcffb1-9b55-4684-b9f2-bdf38a731226' && variant.id != this.variantId) { this.variantId = variant.id; this.getData(); } } /** * Fetch discount code data from API */ getData() { if (appDiscountUtils.inProductBody(this.element)) { const reqBody = { product_id: "67dcffb1-9b55-4684-b9f2-bdf38a731226", variant_id: this.variantId, product_type: "default", } if (!reqBody.product_id || !reqBody.variant_id) return; this.discountCodeData = {}; this.win.fetch(this.getDiscountCodeApi, { method: "POST", body: JSON.stringify(reqBody), headers: { "Content-Type": "application/json" } }).then(async (response) => { if (response.ok) { let data = await response.json(); if (data.list && data.list.length > 0) { data.list[0].product_setting.template_config = JSON.parse(data.list[0].product_setting.template_config); // Format timestamps to local timezone const zone = this.win.SHOPLAZZA.shop.time_zone; data.list = data.list.map(item => { if(+item.ends_at !== -1) { item.ends_at = appDiscountUtils.convertTimestampToFormat(+item.ends_at, zone); } item.starts_at = appDiscountUtils.convertTimestampToFormat(+item.starts_at, zone); return item; }); } this.discountCodeData = data; this.render(); } else { this.clearDom(); } }).catch(err => { console.error("discount_code", err) this.clearDom(); }); } else { this.renderSkeleton(); } } /** * Clear component DOM except template */ clearDom() { const children = this.element.querySelector('*:not(template)'); children && SPZCore.Dom.removeElement(children); } /** * Render discount codes with formatted dates */ render() { // Render using discount code model SPZ.whenApiDefined(document.querySelector('#spz_custom_discount_code_model')).then(renderApi => { renderApi.doRender_({ discountCodeData: this.discountCodeData }) }).catch(err => { this.clearDom(); }) } renderSkeleton() { // Render template for non-product pages this.templates_ .findAndRenderTemplate(this.element, { isMobile: appDiscountUtils.judgeMobile() }) .then((el) => { this.clearDom(); this.element.appendChild(el); }) .catch(err => { this.clearDom(); }); } } // Register custom element SPZ.defineElement('spz-custom-discount-code', SpzCustomDiscountCode);
number:  5 Books / 100 Pcs
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Description

The U.S. Postal Service continues its tradition of celebrating the U.S. flag with this new stamp in coils of 100.

Reminiscent of the 50 flags encircling the Washington Monument, these three U.S. flags are shown as if on poles arranged in a circular formation. The flags, shown from a low-angle perspective, billowing in the wind, evoke a sense of reverence and honor.

The American flag has long symbolized the strength and spirit of our nation. In 1916, President Woodrow Wilson issued a proclamation establishing June 14 as Flag Day, which Congress officially designated in August 1949. Today, the American flag remains a powerful symbol.

Laura Stutzman was the 2018 US Flag stamps designer and illustrator. Ethel Kessler was the art director.

The 2018 US Flag stamps is being issued as a Forever® stamp. This Forever stamp will always be equal in value to the current First-Class Mail® one-ounce price.

Made in the USA.