const res = [
{
name:'a',
children:[
{
name:'b',
children:[]
}
]
},
{
name:'c',
children:[
{
name:'d',
children:[
{
name:'e',
children:[]
}
]
}
]
},
]
let arr = []
function loop(children){
if(children.length){
children.forEach(d=>{
arr.push(d.name);
loop(d.children)
})
}
}
loop(res);
console.log(arr);