Question

我正在使用node.js尝试使用api获取JSON的一些值，我试图遍历并获取JSON中的状态值，我将如何去做。 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: "" }
                    ]

我想要做的是能够遍历此JSON，然后暂时在控制台的单独一行上返回状态。

Answer 1

您可以执行以下操作：

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"))

此处的地图及其工作原理更多：https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/map

Answer 2

尝试一下：

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

Node.js如何遍历JSON以获取值

2 个答案: