与特定地址匹配的Sum对象值

Question

如何搜索对象以总计特定地址的所有结果？

   $.ajax({
        url: "https://snowgem.voidr.net/api/payments",
        dataType: 'json',
        success: function (data) {

            var addr = 's1QR1uT4GvVWgct1sRU226rXiTzCPwf72J3';
            // find object
            var payments = data.find(function (obj) {
                return obj.payments.amounts == addr;
            });  


            console.log(payments);

        },
        error: function() {
          //alert("Was unable to get info!");
        }
    });

Answer 1

以下是如何使用js从amounts获取给定addr地址的总数 -

＆＃13;

＆＃13;

$.ajax({
  url: "https://snowgem.voidr.net/api/payments",
  dataType: 'json',
  success: function(data) {

    var addr = 's1QR1uT4GvVWgct1sRU226rXiTzCPwf72J3';
    // find object
    var totalAmount = 
        data[0].payments.
            map(payment => payment.amounts).  //get all amount object
            map(amounts => amounts[addr]).    //get amount from addr
            filter(price => price).           //filter undefined amount
            reduce((first, second) => {       //sum amount
                return first + second;
            });

    console.log(totalAmount);

  },
  error: function() {
    //alert("Was unable to get info!");
  }
});

＆＃13;

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

＆＃13;

＆＃13;

＆＃13;

点击Run code snippet验证输出。 ：）