PayPal按钮不关闭(重新渲染后重复)

let paypalButtonInitialized = false;

function initializePayPalButton() {
  if (paypalButtonInitialized) {
    return;
  }

  paypal.Button.render({
    'client-id': 'YOUR_PAYPAL_CLIENT_ID',
    'env': 'sandbox', // or 'production'
    'payment': function(data, actions) {
      return actions.payment.create({
        transactions: [{
          amount: { total: '0.01', currency: 'USD' }
        }]
      });
    },
    'onAuthorize': function(data, actions) {
      return actions.payment.execute().then(function(payment) {
        console.log('Payment successful:', payment);
      });
    }
  }, '#paypal-button-container');

  paypalButtonInitialized = true;
}

// 确保在页面加载时初始化一次
document.addEventListener('DOMContentLoaded', initializePayPalButton);

// 防止页面重新渲染时重复初始化
window.addEventListener('beforeunload', function() {
  paypalButtonInitialized = false;
});