array2tree

中文.md https://github.com/lihang90/array2tree

Convert array to tree, array item id is related pid default. Defined yourself related params in parameter you can.

Just like

[
    {
        id: 1,
        pid: 0,
        name: 'level 1'
    },
    {
        id: 2,
        pid: 1,
        name: 'level 2'
    }
    ...
]

convert to

[{
    id: 1,
    pid: 0,
    name: 'level 1',
    children: [
        {
            id: 2,
            pid: 1,
            name: 'level 2',
            children: [...]
        }
    ]
},...]

How to use

• npm install

$ npm install array2tree --save

• use

const array2tree = require('array2tree');

const testArr = [
    {
        id: 1,
        pid: 0,
        name: 'level 1'
    },
    {
        id: 2,
        pid: 1,
        name: 'level 2'
    },
    {
        id: 3,
        pid: 2,
        name: 'level 3'
    }
];

const tree = array2tree(testArr);

console.log(tree);
/*
    [{
        id: 1,
        pid: 0,
        name: 'level 1',
        children: [
            {
                id: 2,
                pid: 1,
                name: 'level 2',
                children: [
                    {
                        id: 3,
                        pid: 2,
                        name: 'level 3',
                        children: []
                    }
                ]
            }
        ]
    }]
*/

• use parameter by yourself

const array2tree = require('array2tree');

const testArr = [
    {
        myId: 1,
        parentId: 0,
        name: 'level 1'
    },
    {
        myId: 2,
        parentId: 1,
        name: 'level 2'
    },
    {
        myId: 3,
        parentId: 2,
        name: 'level 3'
    }
];

const tree = array2tree(testArr, 'myId', 'parentId');

console.log(tree);
/*
    [{
        myId: 1,
        parentId: 0,
        name: 'level 1',
        children: [
            {
                myId: 2,
                parentId: 1,
                name: 'level 2',
                children: [
                    {
                        myId: 3,
                        parentId: 2,
                        name: 'level 3',
                        children: []
                    }
                ]
            }
        ]
    }]
*/

How to test

$ npm install && npm test