数组[a,b,c,d]如何递归成a:{b:{c:{d:"test"}}}

Question

vartest="a.b.c.d"
如何递归成
a:{
b:{
c:{
d:"test"
}
}
}

Answer 1

循环算法：vartest="a.b.c.d";varret="test";vararr=test.split(".");do{varkey=arr.pop();varobj={};obj[key]=ret;ret=obj;}while(arr.length);console.log(ret);递归算法：vartest="a.b.c.d";vararr=test.split(".");vari=arr.length;varret=(functionmerge(val){if(i--){varobj={};obj[arr[i]]=val;val=obj;returnmerge(val);}elsereturnval;})("test");console.log(ret);

Answer 2

vartest="a.b.c.d"constrecur=(objkey,test)=>(f=arr=>arr.length?{[arr.shift()]:f(arr)}:test)(objkey.split('.'))console.log(recur(test,'test'))