Parsing nested data, how to write recursion

something like this 

const demo = [{
        path: "/login",
        name: "login",
        meta: {
            title: "Login - ",
            hideInMenu: true
        }
    },
    {
        path: "/",
        name: "_home",
        redirect: "/home",
        meta: {
            hideInMenu: true,
            notCache: true
        },
        children: [{
            path: "/home",
            name: "home",
            meta: {
                hideInMenu: true,
                title: "",
                notCache: true,
                icon: "md-home"
            }
        }]
    },
    {
        path: "/system",
        name: "system",
        meta: {
            icon: "md-menu",
            title: ""
        },
        children: [{
                path: "user",
                name: "user",
                meta: {
                    icon: "ios-people-outline",
                    title: ""
                }
            },
            {
                path: "menus",
                name: "menus",
                meta: {
                    icon: "md-funnel",
                    title: ""
                }
            },
            {
                path: "character",
                name: "character",
                meta: {
                    icon: "md-funnel",
                    title: ""
                }
            }
        ]
    },
    {
        path: "/401",
        name: "error_401",
        meta: {
            hideInMenu: true
        }
    },
    {
        path: "/500",
        name: "error_500",
        meta: {
            hideInMenu: true
        }
    },
    {
        path: "*",
        name: "error_404",
        meta: {
            hideInMenu: true
        }
    }
]

convert to this 

const demo1=[
    {
        title:"",
        children:[
            {
                title:""
            },
            {
                title:""
            },
            {
                title:""
            }
        ]
    }
]

it can be realized with for that you don"t know how to write it with recursion

Javascript
Nov.23,2021

try this: 

function convertMenueTree(arr) {
    let resultArr = [];   
    arr.map((item) => {
        if(item.children) { //  
            resultArr.push({title:item.meta.title,children:convertMenueTree(item.children)})
        } else { // 
            resultArr.push({title:item.meta.title})
        }
    })    
    return resultArr;
}

convertMenueTree(demo)

the above assumption is that you have meta: {title:*} on each layer.
if not, you can use 

 else {
         if(meta){....meta}
        resultArr.push({title:item.meta.title})
    }

Previous: Mongodb template query data

Next: The same thread of Java ReentrantWriteLock first acquires the read lock, but no longer acquires the write lock.

css mysql arrays josn react html typescript webpack npm sass R objective-c .net sql-server jquery python-3.x angularjs django angular excel regex iphone ajax linux xml pandas vba spring database wordpress string wpf xcode windows bash postgresql oracle multithreading eclipse list firebase algorithm macos forms image scala visual-studio azure bootstrap spring-boot react-native python-2.7 docker performance function winforms matlab powershell apache dataframe api sqlite numpy rest shell selenium flutter dart maven loops qt swing android-studio csv express file class tensorflow sorting codeigniter perl
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b3be63-2c2d9.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b3be63-2c2d9.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?