Payment Request API：原生支付界面与兼容策略

<1> <2>title: Payment Request API：原生支付界面与兼容策略<3> <4>keywords:<5> <6> <7>PaymentRequest<8> <9>supportedMethods<10> <11>paymentmethodchange<12> <13>总价更新<14> <15>兼容策略<16> <17> <18>description: 使用 Payment Request API 调起原生支付界面并处理金额与收货信息，结合兼容策略与安全注意事项，提升结算体验与转化率。<19> <20>categories:<21> <22> <23>文章资讯<24> <25>技术教程<26> <27> <28> <29>概述<30> <31>Payment Request API 提供原生结算界面与支付方式抽象，支持根据用户选择动态更新价格与运费，减少表单步骤与输入负担。<32> <33>用法/示例<34> <35><36> const methods = [{ supportedMethods: 'basic-card' }] const details = { total: { label: '总计', amount: { currency: 'CNY', value: '199.00' } }, displayItems: [{ label: '商品A', amount: { currency: 'CNY', value: '199.00' } }] } const opts = { requestPayerEmail: true, requestShipping: true } const req = new PaymentRequest(methods, details, opts) req.addEventListener('paymentmethodchange', e => { const newDetails = { ...details, total: { label: '总计', amount: { currency: 'CNY', value: '189.00' } } } e.updateWith(newDetails) }) const resp = await req.show() await sendToServer(resp) await resp.complete('success') <37><38> <39>工程建议<40> <41> <42>明确支持的支付方式与地区策略；对不支持环境回退到传统表单与第三方 SDK。<43> <44>校验返回的支付令牌与收货信息；遵守 PCI 与隐私合规。<45> <46>为动态金额更新提供一致的后端校验，避免价格不同步与欺诈。<47> <48> <49>参考与验证<50> <51> <52>MDN：Payment Request API — https://developer.mozilla.org/docs/Web/API/Payment_Request_API<53> <54>W3C：Payment Request — https://www.w3.org/TR/payment-request/<55> <56>