将对象数组a中不包含数组b里的元素的项去除

var a = [
        { name: "aa", children: [{ name: "aa1" }, { name: "aa2" }] },
        { name: "bb", children: [{ name: "bb1" }, { name: "bb2" }] },
        { name: "cc", children: [{ name: "cc1" }, { name: "cc2" }] },
        { name: "dd", children: [{ name: "dd1" }, { name: "dd2" }] },
        { name: "ee", children: [{ name: "ee1" }, { name: "ee2" }] },
      ];
var b = ["aa1","aa2","cc1", "bb2","dd1" ];
//目标对象
var mune = [
        { name: "aa", children: [{ name: "aa1" },{ name: "aa2" }] },
        { name: "bb", children: [{ name: "bb2" }] },
        { name: "cc", children: [{ name: "cc1" }] },
        { name: "dd", children: [{ name: "dd1" }] },
      ];

var a = [

        { name: "aa", children: [{ name: "aa1" }, { name: "aa2" }] },

        { name: "bb", children: [{ name: "bb1" }, { name: "bb2" }] },

        { name: "cc", children: [{ name: "cc1" }, { name: "cc2" }] },

        { name: "dd", children: [{ name: "dd1" }, { name: "dd2" }] },

        { name: "ee", children: [{ name: "ee1" }, { name: "ee2" }] },

      ];

var b = ["aa1","aa2","cc1", "bb2","dd1" ];

for(var i=0;i<a.length;i++){

  for(var j=0;j<a[i].children.length;j++){

    if(b.indexOf(a[i].children[j].name)==-1){

      a[i].children.splice(j,1);

      j--;

    }

  }

  if(a[i].children.length==0){

    a.splice(i,1);

    i--;

  }

}

大佬牛逼，我弄的是新建一个数组，把包含的添加到新数组里，但是没你这个好

var a = [
        { name: "aa", children: [{ name: "aa1" }, { name: "aa2" }] },
        { name: "bb", children: [{ name: "bb1" }, { name: "bb2" }] },
        { name: "cc", children: [{ name: "cc1" }, { name: "cc2" }] },
        { name: "dd", children: [{ name: "dd1" }, { name: "dd2" }] },
        { name: "ee", children: [{ name: "ee1" }, { name: "ee2" }] },
      ];
var b = ["aa1","aa2","cc1", "bb2","dd1" ];

let mm = [];
      a.forEach((v) => {
        let cc = [];
        for (let c = 0; c < v.children.length; c++) {
          let cv = v.children[c].name;
          let f = b.find((s) => s == cv);
          if (f) cc.push({ name: f });
        }
        v.children = cc;
        if (cc.length > 0) mm.push(v);
      });
      console.log(mm);