希望增加jsonTree支持

[sweetwisdom]

老师你好，希望增加json转树形结构，我简单修改了下源码，暂时实现了如下效果：

输入：

id	name	pid
1	aa	0
2	bb	0
3	cc	0
4	dd	0
5	ee	1
6	a0	1
7	a1	1
8	a2	2
9	a3	2
10	a4	3
11	a5	3
12	a6	4

根据配置的id,pid生成json树
部分代码如下：

 const data = JSON.parse(this.outputText);
      //   获取id,pid,childen的值 从form表单获取
      const id = $("#setId").val();
      const pid = $("#setPid").val();
      const children = $("#setChildren").val();
  const config = {
        id,
        pid,
        children,
      };
      const treeData = dataToTree(data, config);

      this.outputTextArea.val(JSON.stringify(treeData, null, 2));

/**
 * dataToTree
 * @param {*} data 
 * @param {*} config 
 * @returns 
 */
function dataToTree(data, config) {
  const { id, pid, children } = config;
  const result = [];
  let keyObj = {};
  data.forEach((item) => {
    keyObj[item[id]] = item;
  });
  data.forEach((item) => {
    let parent = keyObj[item[pid]];
    if (parent) {
      if (!parent[children]) {
        parent[children] = [];
      }
      parent[children].push(item);
    } else {
      result.push(item);
    }
  });
  return result;
}

最后的生成结果：

[
    {
        "id": 1,
        "name": "aa",
        "pid": 0,
        "children": [
            {
                "id": 5,
                "name": "ee",
                "pid": 1
            },
            {
                "id": 6,
                "name": "a0",
                "pid": 1
            },
            {
                "id": 7,
                "name": "a1",
                "pid": 1
            }
        ]
    },
    {
        "id": 2,
        "name": "bb",
        "pid": 0,
        "children": [
            {
                "id": 8,
                "name": "a2",
                "pid": 2
            },
            {
                "id": 9,
                "name": "a3",
                "pid": 2
            }
        ]
    },
    {
        "id": 3,
        "name": "cc",
        "pid": 0,
        "children": [
            {
                "id": 10,
                "name": "a4",
                "pid": 3
            },
            {
                "id": 11,
                "name": "a5",
                "pid": 3
            }
        ]
    },
    {
        "id": 4,
        "name": "dd",
        "pid": 0,
        "children": [
            {
                "id": 12,
                "name": "a6",
                "pid": 4
            }
        ]
    }
]