Node.js如何遍歷JSON以獲取值

Question

我正在使用node.js嘗試使用api獲取JSON的一些值，我試圖遍歷並獲取JSON中的狀態值，我將如何去做。 JSON如下所示

var serverNamesEurope = [
                        { name: result.Chars.Servers[0].Server[19].Name, status: result.Chars.Servers[0].Server[19].Usage, return: ""},
                        { name: result.Chars.Servers[0].Server[21].Name, status: result.Chars.Servers[0].Server[21].Usage, return: "" },
                        { name: result.Chars.Servers[0].Server[9].Name, status: result.Chars.Servers[0].Server[9].Usage, return: "" },
                        { name: result.Chars.Servers[0].Server[10].Name, status: result.Chars.Servers[0].Server[10].Usage, return: "" },
                        { name: result.Chars.Servers[0].Server[7].Name, status: result.Chars.Servers[0].Server[7].Usage, return: "" },
                        { name: result.Chars.Servers[0].Server[14].Name, status: result.Chars.Servers[0].Server[14].Usage, return: "" },
                        { name: result.Chars.Servers[0].Server[12].Name, status: result.Chars.Servers[0].Server[12].Usage, return: "" }
                    ]

我想做的是能夠遍歷此JSON，然后暫時在控制台的單獨一行上返回狀態。

Answer 1

您可以執行以下操作：

var serverNamesEurope = [
                        { name: result.Chars.Servers[0].Server[19].Name, status: result.Chars.Servers[0].Server[19].Usage, return: ""},
                        { name: result.Chars.Servers[0].Server[21].Name, status: result.Chars.Servers[0].Server[21].Usage, return: "" },
                        { name: result.Chars.Servers[0].Server[9].Name, status: result.Chars.Servers[0].Server[9].Usage, return: "" },
                        { name: result.Chars.Servers[0].Server[10].Name, status: result.Chars.Servers[0].Server[10].Usage, return: "" },
                        { name: result.Chars.Servers[0].Server[7].Name, status: result.Chars.Servers[0].Server[7].Usage, return: "" },
                        { name: result.Chars.Servers[0].Server[14].Name, status: result.Chars.Servers[0].Server[14].Usage, return: "" },
                        { name: result.Chars.Servers[0].Server[12].Name, status: result.Chars.Servers[0].Server[12].Usage, return: "" }
                    ]

console.log(serverNamesEurope.map(record => record.status).join("\n"))

有關地圖及其運作方式的更多信息，請訪問： https : //developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/map

Answer 2

嘗試這個：

serverNamesEurope.forEach(elem => {
  console.log(elem.status)
})