Paypal支付不完全指北

// 如果默认货币不是美元，需要在后面添加货币参数
<script src="https://www.paypal.com/sdk/js?client-id=sb"></script> 

paypal.Buttons({
createOrder: function(data, actions) {
 // This function sets up the details of the transaction, including the amount and line item details.
 return actions.order.create({
  purchase_units: [{
   amount: {
    value: '0.01'
   }
  }]
 });
},
onApprove: function(data, actions) {},
onCancel: function(){},
onError: function(){}
}).render('#paypal-button-container');

{
  "intent": "CAPTURE",
  "purchase_units": [
    {
      "reference_id": "order_id",
      // 总价
      "amount": {
        "value": "200",
        "currency_code": "RMB"
      },
      // 价格明细
      "breakdown": {
        // 商品总价
        "item_total": {
          "value": "180",
          "currency_code": "RMB"
        },
        // 运费
        "shipping": {
          "value": "20",
          "currency_code": "RMB"
        }
        // …… 还有税费之类的
      },
      // 商品明细
      "items": [
        {
          "name": "goods",
          "unit_amount": {
            "value": "90",
            "currency_code": "RMB"
          },
          "quantity": 2,// 数量
          "sku": "sku"
        }
      ]
      //...地址之类的其他参数
    }
  ],
  "application_context": {
    "cancel_url": "",
    "return_url": ""
  }
}