<script>
        //原始从服务器返回的数据
        const temp = [
            {"id":7, "parent":0, "name":"test0"},
            {"id":8, "parent":0, "name":"test1"},
            {"id":9, "parent":0, "name":"test2"},
            {"id":68, "parent":0, "name":"test3"},
            {"id":349, "parent":0, "name":"test4"},
            {"id":74, "parent":7, "name":"test5"},
            {"id":20, "parent":8, "name":"test6"},
            {"id":21, "parent":8, "name":"test7"},
            {"id":67, "parent":8, "name":"test8"},
            {"id":185, "parent":9, "name":"test9"},
            {"id":186, "parent":68, "name":"test10"},
            {"id":187, "parent":68, "name":"test11"},
            {"id":188, "parent":68, "name":"test12"},
            {"id":189, "parent":68, "name":"test13"},
            {"id":190, "parent":185, "name":"test14"},
            {"id":191, "parent":185, "name":"test15"},
            {"id":192, "parent":185, "name":"test16"},
            {"id":350, "parent":349, "name":"test17"},
            {"id":351, "parent":349, "name":"test18"},
        ];
        //处理好的数据
        let res = getTree(temp,0,[]);
        console.log(res);//打印观察
        //处理数据方法
        function getTree(list,pid,data){
            //获取所有一级
            for(let item of list){
                if(item.parent == pid){
                    data.push(item);
                }
            }
            //获取子级
            for(let i of data){
                i.children = [];
                getTree(list,i.id,i.children);//递归调用
                if(i.children.length == 0){
                    delete i.children;
                }
            }
            return data;
        }
</script>