1function processPaymentSecure(cardData) {
2    // 立即令牌化卡数据
3    const token = tokenizeCardData(cardData);
4    
5    // 从内存中清除敏感数据
6    cardData = null;
7    
8    // 仅记录非敏感支付元数据
9    securityLog.info({
10        event: 'payment_processing',
11        token_id: token.id,
12        amount: token.amount,
13        timestamp: new Date().toISOString()
14    });
15    
16    return processTokenizedPayment(token);
17}
18 

1function processPayment(cardData) {
2    // Storing card
3     data in local storage
4    localStorage.setItem('lastCard', JSON.stringify(cardData));
5    
6    // Logging sensitive payment data
7    console.log('Processing payment:', cardData);
8    
9    // Sending card data to analytics
10    analytics.track('payment_attempt', {
11        card_number: cardData.number,
12        cvv: cardData.cvv
13    });
14}
15