Please tell me how to loop and recursively put all the id of an array in an array into another array.

Thank you. I thought of it as soon as it was released.
data: [

] 
{
    value: ""
    children: [
        {
            value:"",
                children: [
                    {value: ""}
                ]
        },
        {
            value:"",
                children: [
                    {value: ""}
                ]
        },
    ]
}

]
how to determine whether there is a children array under the array, and then put the value in it into a new array?

Javascript
Mar.10,2021 
let data = {
    value: '',
    children: [{
            value: '',
            children: [
                { value: '' }
            ]
        },
        {
            value: '',
            children: [
                { value: '' }
            ]
        },
    ]
}


function f({ value, children }, array = []) {
    array.push(value)
    if (children && children.length > 0) {
        for (let child of children) {
            f(child, array)
        }
    }
    return array;
}

console.log(f(data))//[ '', '', '', '', '' ]

var data = [

  {
    value: '',
    children: [
      {
        value: '',
        children: [
          { value: '' }
        ]
      },
      {
        value: '',
        children: [
          { value: '' }
        ]
      },
    ]
  }
]
var arr = []
function f(items) {
  items.forEach(item => {
    arr.push(item.value)
    if (item.children) {
      f(item.children)
    }
  })
}
f(data)
console.log(arr)
var m = [];
function test(arr){
    arr.forEach(v=>{
        m.push(v.value);
        f(v.children)test(v.children)
    })
}

Previous: Weex run android could not resolve error

Next: When multiple images are rotated on the mobile ios, there is a probability of picture disorder during handover. How to solve this problem?

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-64f5-42b6ff2-67f3.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-42b6ff2-67f3.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?