Question

我的.json文件是：

{
"links":[
  {source: "algorithms cormen", target: "irodov", type: "default"},
  {source: "algorithms cormen", target: "skienna", type: "default"},
  {source: "irodov", target: "skienna", type: "default"},
  {source: "irodov", target: "algorithms cormen", type: "default"}
],
"data":[
    {node: "algorithms cormen", data: "bible of algos"},
    {node: "irodov", data: "bibile of physics"},
    {node: "skienna", data: "cool book"}
]
}

现在在我的javascript文件中，我希望“链接”存储的数据转到链接变量。我想用“数据”做同样的事情我该如何实现这一目标？我正在使用d3.js库，所以如果我可以使用这个库中包含的某些功能，请提及它们。

Answer 1

只需解析JSON并将值赋给变量：

var json; // I am assuming this is populated with your JSON string
var jsonObj = JSON.parse(json);
var links = jsonObj.links;
var data = jsonObj.data;

Answer 2

将json文件更新为（假设您在页面加载时不包含json文件而不是通过ajax）

var json-data = { 
     "links":[
         {source: "algorithms cormen", target: "irodov", type: "default"},
         {source: "algorithms cormen", target: "skienna", type: "default"},
         {source: "irodov", target: "skienna", type: "default"},
         {source: "irodov", target: "algorithms cormen", type: "default"}
],
    "data":[
        {node: "algorithms cormen", data: "bible of algos"},
        {node: "irodov", data: "bibile of physics"},
        {node: "skienna", data: "cool book"}
    ]
}

然后访问

var links = json-data.links; 
var data = json-data.data;

检索.json对象并将其存储在变量中

2 个答案: