使用javascript从json中提取键值

Question

如何控制台日志AMS 升级和BMS 工作，注意这些是变量，因此解决方案不应直接引用上述字符串值。 我成功地按照下面的代码获得了除它们之外的所有值。

代码：

const data = {"line_items": 
    {"AMS Upgrade": [
        {"Total": 30667.303111791967},
        {"complete": 1.0},
        {"claimed": 25799.788761888347}],
    "BMS works":    [
        {"Total": 35722.8761704046},
        {"complete": 0.1},
        {"claimed": 3572.2876170404597}]
    }
}
let totals = [];
for(let key in data.line_items){
  console.log(data['line_items'][1])
  console.log(data.line_items[key][0].Total)
  console.log(data.line_items[key][1].complete)
  console.log(data.line_items[key][2].claimed)

} 

Answer 1

您已经有了将它们放入变量的代码：

 for (let key in data.line_items) {

只需记录key的值。

 const data = { "line_items": { "AMS Upgrade": [{ "Total": 30667.303111791967 }, { "complete": 1.0 }, { "claimed": 25799.788761888347 } ], "BMS works": [{ "Total": 35722.8761704046 }, { "complete": 0.1 }, { "claimed": 3572.2876170404597 } ] } } let totals = []; for (let key in data.line_items) { console.log(key); }

Answer 2

const data = {"line_items": 
    {"AMS Upgrade": [
        {"Total": 30667.303111791967},
        {"complete": 1.0},
        {"claimed": 25799.788761888347}],
    "BMS works":    [
        {"Total": 35722.8761704046},
        {"complete": 0.1},
        {"claimed": 3572.2876170404597}]
    }
}
let totals = [];
for(let key in data.line_items){
  console.log(key)
  console.log(data.line_items[key][0].Total)
  console.log(data.line_items[key][1].complete)
  console.log(data.line_items[key][2].claimed)

}