SOURCE

var arr = []
function fn(a){
    if(a.children && a.children.length>0){
      a.children.forEach(i=>{
          fn(i)
      })
    }else{
        this.arr.push(a.name)
        return a.name
    }
}
var obj =[
     {
        name: 'good1',
        children: [
            {
                name:'tool',
                children: [
                    {name: 'name1'},
                    {name: 'name2'}
                ]
            }
        ],
    },
    {name: 'name3'}
]

this.obj.forEach(j=>{
    fn(j)
    
})
console.log(this.arr)