json扁平数据处理

[yyman001]

https://blog.csdn.net/Mr_JavaScript/article/details/82817177

function setTreeData(source){
    let cloneData = JSON.parse(JSON.stringify(source))      // 对源数据深度克隆
    return  cloneData.filter(father=>{                      // 循环所有项，并添加children属性
        let branchArr = cloneData.filter(child=> father.id == child.parentId);   // 返回每一项的子级数组
        branchArr.length>0 ? father.children=branchArr : ''   //给父级添加一个children属性，并赋值
        return father.parentId==0;      //返回第一层
    });
}
function treeData(source, id, parentId, children){   
    let cloneData = JSON.parse(JSON.stringify(source))
    return cloneData.filter(father=>{
        let branchArr = cloneData.filter(child => father[id] == child[parentId]);
        branchArr.length>0 ? father[children] = branchArr : ''
        return father[parentId] == 0        // 如果第一层不是parentId=0，请自行修改
    })
}

// 调用时，字段名以字符串的形式传参，如treeData(source, 'id', 'parentId', 'children')

https://blog.csdn.net/qq_37746973/article/details/78662177 https://github.com/aximario/json-tree/blob/master/src/index.ts