JavaScript 给定数组和要遍历的属性，返回所有叶子节点

function getListLeafNode (list, prop, tmpList = []) {
    for (let i = 0; i < list.length; i++) {
        if (list[i][prop] && list[i][prop].length) {
            getListLeafNode(list[i][prop], prop, tmpList)
        } else {
            tmpList.push(list[i])
        }
    }
    return tmpList
}

样例

let dataList = [{
        id: '1',
        children: [
            {id: '11'},
            {id: '12'}
        ]
    }, {
        id: '2'
    }, {
        id: '3'
    }
]

console.log(getListLeafNode(dataList, 'children'))

运行结果

[
    {id: '11'},
    {id: '12'},
    {id: '2'},
    {id: '3'}
]