Recursion Example with Node

index.js

console.log('Simple Recursion Example')

function recurse(num){
    let newnum = num + 1
    if(num < 50){
        recurse(newnum)
    }
    console.log(newnum)
}

recurse(0)

console.log('Complext Recursion Example with Array of Objects')

let arrayOfObjects = {

    name: 'Starting Object',
    children: [
        {
            name: 'Obj 1',
            children: [
                {
                    name: 'Obj 2:1',
                    children: [
                        {
                            name: 'Obj 3:1',
                            children: [
                    
                            ]
                        },
                        {
                            name: 'Obj 3:2',
                            children: []
                        }
                    ]
                },
                {
                    name: 'Obj 2:2',
                    children: [
                        {
                            name: 'Obj 1',
                            children: [
                                {
                                    name: 'Obj 2:1',
                                    children: [
                                        {
                                            name: 'Obj 3:1',
                                            children: [
                                    
                                            ]
                                        },
                                        {
                                            name: 'Obj 3:2',
                                            children: []
                                        }
                                    ]
                                },
                                {
                                    name: 'Obj 2:2',
                                    children: []
                                }
                            ]
                        },
                        {
                            name: 'Obj 2',
                            children: [
                                {
                                    name: 'Obj 1',
                                    children: [
                                        {
                                            name: 'Obj 2:1',
                                            children: [
                                                {
                                                    name: 'Obj 3:1',
                                                    children: [
                                            
                                                    ]
                                                },
                                                {
                                                    name: 'Obj 3:2',
                                                    children: []
                                                }
                                            ]
                                        },
                                        {
                                            name: 'Obj 2:2',
                                            children: [
                                                {
                                                    name: 'Obj 1',
                                                    children: [
                                                        {
                                                            name: 'Obj 2:1',
                                                            children: [
                                                                {
                                                                    name: 'Obj 3:1',
                                                                    children: [
                                                            
                                                                    ]
                                                                },
                                                                {
                                                                    name: 'Obj 3:2',
                                                                    children: []
                                                                }
                                                            ]
                                                        },
                                                        {
                                                            name: 'Obj 2:2',
                                                            children: []
                                                        }
                                                    ]
                                                },
                                                {
                                                    name: 'Obj 2',
                                                    children: []
                                                }
                                            ]
                                        }
                                    ]
                                },
                                {
                                    name: 'Obj 2',
                                    children: []
                                }
                            ]
                        }
                    ]
                }
            ]
        },
        {
            name: 'Obj 2',
            children: [
                {
                    name: 'Obj 1',
                    children: [
                        {
                            name: 'Obj 2:1',
                            children: [
                                {
                                    name: 'Obj 3:1',
                                    children: [
                            
                                    ]
                                },
                                {
                                    name: 'Obj 3:2',
                                    children: []
                                }
                            ]
                        },
                        {
                            name: 'Obj 2:2',
                            children: [
                                {
                                    name: 'Obj 1',
                                    children: [
                                        {
                                            name: 'Obj 2:1',
                                            children: [
                                                {
                                                    name: 'Obj 3:1',
                                                    children: [
                                            
                                                    ]
                                                },
                                                {
                                                    name: 'Obj 3:2',
                                                    children: []
                                                }
                                            ]
                                        },
                                        {
                                            name: 'Obj 2:2',
                                            children: []
                                        }
                                    ]
                                },
                                {
                                    name: 'Obj 2',
                                    children: []
                                }
                            ]
                        }
                    ]
                },
                {
                    name: 'Obj 2',
                    children: []
                }
            ]
        }
    ]
}

function recurseArrayOfObjects(obj,depth=0) {
    let space = ' ' 
    for (i=0; i<depth; i++){
        space += '\t'
    }
    console.log(`${space} <li>${obj.name}</li>`)
    if(obj.children.length > 0){
        console.log(`${space} <ul>`)
        obj.children.forEach(childObject => {
            return recurseArrayOfObjects(childObject,depth+1)
        })
        console.log(`${space} </ul>`)
    }
}

recurseArrayOfObjects(arrayOfObjects)