Question

如何阅读JSON文件并使用javascript将其推送到数组中？我没有找到像这个一样深的例子。这个JSON将持续一年。提前致谢。 *源自firebase。 *语法不好不是犯罪^ _ ^ *导航并阅读JSON对象。抱歉缺乏知识。

perl -lane 's/^[@=]//g; print ' file.txt

}

Answer 1

[{
    "Year": 2017,
    "Jan": {
        "A": {
            "Actual Sales": "14",
            "Code": "3",
            "Comment": "15",
            "Date Due": "8",
            "Date Received": "7",
            "Description": "6",
            "Drawing Number": "4",
            "Due Day": "12",
            "Invoice": "1",
            "PO": "2",
            "Qty": "9",
            "Rev": "5",
            "Status": "11",
            "Total Sales": "13",
            "Unit Price": "10"
        },

        "B": {
            "Actual Sales": "14",
            "Code": "3",
            "Comment": "15",
            "Date Due": "8",
            "Date Received": "7",
            "Description": "6",
            "Drawing Number": "4",
            "Due Day": "12",
            "Invoice": "1",
            "PO": "2",
            "Qty": "9",
            "Rev": "5",
            "Status": "11",
            "Total Sales": "13",
            "Unit Price": "10"
        }
    },
    "Feb": {
        "A": {
            "Actual Sales": "14",
            "Code": "3",
            "Comment": "15",
            "Date Due": "8",
            "Date Received": "7",
            "Description": "6",
            "Drawing Number": "4",
            "Due Day": "12",
            "Invoice": "1",
            "PO": "2",
            "Qty": "9",
            "Rev": "5",
            "Status": "11",
            "Total Sales": "13",
            "Unit Price": "10"
        },

        "B": {
            "Actual Sales": "14",
            "Code": "3",
            "Comment": "15",
            "Date Due": "8",
            "Date Received": "7",
            "Description": "6",
            "Drawing Number": "4",
            "Due Day": "12",
            "Invoice": "1",
            "PO": "2",
            "Qty": "9",
            "Rev": "5",
            "Status": "11",
            "Total Sales": "13",
            "Unit Price": "10"
        }
    }
}]

这样你就会得到一个很好的Json，它包含了数组中每个位置的一个关于它所引用的年份的信息（“Year”属性），并且对于每个月，你将拥有一个JSON对象，你可以从（A，B，...）收集所需信息

Answer 2

这个问题不清楚......

当您使用Ajax调用API时，JSON（JavaScript Object Notation）格式非常有用。它主要是一种交换格式，就像XML一样。以下是XMLHttpRequest的示例：

var req = new XMLHttpRequest();

req.onreadystatechange = function(event) {
    if (this.readyState === XMLHttpRequest.DONE) {
        if (this.status === 200) {
            console.log(this.responseText);
            // Your JSON is here!
            var json = JSON.parse(this.responseText);
        } else {
            console.log(this.status, this.statusText);
        }
    }
};

req.open('GET', 'https://api.github.com', true);
req.send(null);

使用本地JSON文件通常不是最佳解决方案，因为您需要异步请求文件系统。更好的解决方案，特别是如果您使用模块，就是使用简单的对象文字来存储信息。使用CommonJS，您可以执行以下操作：

// data.js
module.exports = {
  foo: 'Foo',
  bar: 'Bar',
  baz: 'Baz'
};

// main.js
var data = require('./data');

然后，无论出于何种原因，您都可以使用Array.prototype.push()将数据推送到数组中：

var arr = [];
arr.push(data);

编辑1：您的评论仍不清楚，但是......您想要这样的内容吗？

var arr = [];

// Suppose your JSON is stored in a "json" variable
arr.push(json['Year']['2017']['Jan']['A']);
arr.push(json['Year']['2017']['Jan']['B']);

编辑2：试试这个......

var json = {
  "Year": {
    "2017": {
      "Jan": {
         "A": {
          "Actual Sales": "14",
          "Code": "3",
          "Comment": "15",
          "Date Due": "8",
          "Date Received": "7",
          "Description": "6",
          "Drawing Number": "4",
          "Due Day": "12",
          "Invoice": "1",
          "PO": "2",
          "Qty": "9",
          "Rev": "5",
          "Status": "11",
          "Total Sales": "13",
          "Unit Price": "10"
        },

        "B": {
          "Actual Sales": "14",
          "Code": "3",
          "Comment": "15",
          "Date Due": "8",
          "Date Received": "7",
          "Description": "6",
          "Drawing Number": "4",
          "Due Day": "12",
          "Invoice": "1",
          "PO": "2",
          "Qty": "9",
          "Rev": "5",
          "Status": "11",
          "Total Sales": "13",
          "Unit Price": "10"
        }
      },
      "Feb": {
        "A": {
          "Actual Sales": "14",
          "Code": "3",
          "Comment": "15",
          "Date Due": "8",
          "Date Received": "7",
          "Description": "6",
          "Drawing Number": "4",
          "Due Day": "12",
          "Invoice": "1",
          "PO": "2",
          "Qty": "9",
          "Rev": "5",
          "Status": "11",
          "Total Sales": "13",
          "Unit Price": "10"
        },

        "B": {
          "Actual Sales": "14",
          "Code": "3",
          "Comment": "15",
          "Date Due": "8",
          "Date Received": "7",
          "Description": "6",
          "Drawing Number": "4",
          "Due Day": "12",
          "Invoice": "1",
          "PO": "2",
          "Qty": "9",
          "Rev": "5",
          "Status": "11",
          "Total Sales": "13",
          "Unit Price": "10"
        }
      }
    }
  }
};

var arr = [];

for (var key in json['Year']['2017']['Jan']) {
  arr.push(json['Year']['2017']['Jan'][key]);
}

console.log(arr);

如何导航JSON文件，获取所需的对象并使用javascript将其推送到数组？

2 个答案: