在此页

• 句法
• 范例
• 规范
• 浏览器兼容性
• 相关话题

安全上下文
此特征只可用于 安全上下文 (HTTPS)，在某些或所有 支持浏览器 .

PaymentRequest event handler onpaymentmethodchange is invoked when the paymentmethodchange is fired, indicating that the user has changed payment methods within a given payment handler. For example, when using Apple Pay, the user can swipe to select different credit cards, debit cards, and so forth. Each time the user does so, this event is fired.

This event may not be fired by all payment handlers.

句法

PaymentRequest.addEventListener('paymentmethodchange', paymentMethodChangeEvent => { ... });
PaymentRequest.onpaymentmethodchange = function(paymentMethodChangeEvent) { ... };
					

值

An event handler function which is to be called whenever the paymentmethodchange event is fired at the PaymentRequest , indicating that the user has changed payment methods within the same payment handler.

paymentmethodchange event is triggered by a user-agent controlled interaction (i.e., the end-user switches from a debit to a credit card in the payment UI). To make sure you receive the event, you should add event listeners to PaymentRequest object after instantiation, but before you call show() .

范例

An example payment method change handler is shown below; this example handles changes made to the payment method when using Apple Pay, specifically:

request.onpaymentmethodchange = ev => {
  const { type: cardType } = ev.methodDetails;
  const newStuff = {};
  if (ev.methodName === "https://apple.com/apple-pay") {
    switch (cardType) {
      case "store":
        // do Apple Pay specific handling for store card...
        // methodDetails contains the store card information
        const result = calculateDiscount(ev.methodDetails);
        Object.assign(newStuff, result);
        break;
    }
  }
  // finally...
  ev.updateWith(newStuff);
};
const response = await request.show();
					

规范

规范	状态	注释
支付请求 API The definition of 'onpaymentmethodchange' in that specification.	候选推荐	初始定义。

浏览器兼容性

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据

	桌面						移动
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
onpaymentmethodchange	Chrome 不支持 No	Edge 不支持 No	Firefox 63 注意事项 Disabled 63 注意事项 Disabled Available only in nightly builds. Disabled ). To change preferences in Firefox, visit about:config.	IE 不支持 No	Opera 不支持 No	Safari ?	WebView Android 不支持 No	Chrome Android 不支持 No	Firefox Android 63 注意事项 Disabled 63 注意事项 Disabled Available only in nightly builds. Disabled ). To change preferences in Firefox, visit about:config.	Opera Android 不支持 No	Safari iOS ?	Samsung Internet Android 不支持 No

图例

完整支持

完整支持

不支持

不支持

兼容性未知 ?

兼容性未知

见实现注意事项。

用户必须明确启用此特征。

用户必须明确启用此特征。

元数据

• 最后修改： Mar 18, 2019

相关话题

1. 支付请求 API
2. PaymentRequest
3. 构造函数

   1. PaymentRequest()
4. 特性

   1. onmerchantvalidation
   2. onpaymentmethodchange
   3. onshippingaddresschange
   4. shippingAddress
   5. shippingOption
5. 方法

   1. canMakePayment()
   2. show()
6. 事件

   1. paymentmethodchange
7. 继承：

   1. EventTarget
8. Related pages for Payment Request API

   1. HTMLIFrameElement.allowPaymentRequest
   2. MerchantValidationEvent
   3. PaymentAddress
   4. PaymentMethodChangeEvent
   5. PaymentRequestUpdateEvent
   6. PaymentResponse