Question

请找到我的json数组，我想以下面的格式形成数据数组：

[Sunday.a_count.value，Monday.a_count.value，Tuesday.a_count.value，Wednesday.a_count.value] - 此格式输出将 [0,2,2,3] -

最终，这些值来自星期日a_count，星期一a_count，星期二a_count和星期三a_count。

我无法在javascript中使用json下面的json形成上述格式的数据，如果有人可以帮助实现这一点，那将非常有帮助。

谢谢！

[ {
  "day" : "Sunday",
  "a_count" : 0,
  "b_count" : 2,
  "c_count" : 0,
  "d_count" : 0
}, {
  "day" : "Monday",
  "a_count" : 2,
  "b_count" : 0,
  "c_count" : 0,
  "d_count" : 0
}, {
  "day" : "Tuesday",
  "a_count" : 2,
  "b_count" : 0,
  "c_count" : 0,
  "d_count" : 0
}, {
  "day" : "Wednesday",
  "a_count" : 3,
  "b_count" : 0,
  "c_count" : 0,
  "d_count" : 0
} ]

Answer 1

根据我的理解，您希望从a_count获得价值，您可以使用.map来实现，就像这样

＆＃13;

var data = [ {
  "day" : "Sunday",
  "a_count" : 0,
  "b_count" : 2,
  "c_count" : 0,
  "d_count" : 0
}, {
  "day" : "Monday",
  "a_count" : 2,
  "b_count" : 0,
  "c_count" : 0,
  "d_count" : 0
}, {
  "day" : "Tuesday",
  "a_count" : 2,
  "b_count" : 0,
  "c_count" : 0,
  "d_count" : 0
}, {
  "day" : "Wednesday",
  "a_count" : 3,
  "b_count" : 0,
  "c_count" : 0,
  "d_count" : 0
} ];

var res = data.map(function (el) {
  return el.a_count;
});

console.log(res);

＆＃13;

如何在javascript中从JSON数组创建值数组

1 个答案: