在嵌套的 json 对象中插入数据

Question

我有一个 json 对象数据，格式如下。因为我需要在特定 ID 之后插入一些新记录。

    [
       {
          "id":"1",
          "name":"one",
          "children":[
             {
                "id":"4",
                "name":"four",
                "children":[

                ]
             },
             {
                "id":"5",
                "name":"five",
                "children":[

                ]
             },
             {
                "id":"6",
                "name":"six",
                "children":[

                ]
             }
          ]
       }       
    ]

例如：我的 ID 为 5，还有新的 JSON 对象（{"id":"new data","name":"new data","children":[]})。那么新数据应该在 id 5 之后插入。是否有任何可能的方法在某个特定的 id 之后插入。

        [
       {
          "id":"1",
          "name":"one",
          "children":[
             {
                "id":"4",
                "name":"four",
                "children":[

                ]
             },
             {
                "id":"5",
                "name":"five",
                "children":[

                ]
             }, 
             {
                "id":"new data",
                "name":"new data",
                "children":[

                ]
             },
             {
                "id":"6",
                "name":"six",
                "children":[

                ]
             }
          ]
       }
    ]

Answer 1

这是 splice 的快速示例 ;) 只需传递目标数组、对象和 ID，add 函数就会将您的新对象插入到目标中的适当位置。

const data = [{
  "id":"1",
  "name":"one",
  "children":[
     {
        "id":"4",
        "name":"four",
        "children":[]
     },
     {
        "id":"5",
        "name":"five",
        "children":[]
     },
     {
        "id":"6",
        "name":"six",
        "children":[]
     }
  ]
}];

const object = {"id":"new data","name":"new data","children":[]};

const add = (object, toArray, afterId) => {
  const afterIndex = toArray.findIndex(item => item.id === afterId);
  toArray.splice(afterIndex + 1, 0, object);
};

add(object, data[0].children, '5');
console.log(data);

在嵌套的 json 对象中插入数据

insertafter data in nested json object

javascript

underscore.js