js 对象根据路径修改值

var obj = {
    "zhang":{
        name:'张三',
        girlfriend:{
            name:'阿狸',
        }
    }
}

var path = 'zhang-girlfriend-name'
var value = '娑娜'

function setVal(){
    var list = path.split("-");
    var th = "";
    for (let i = 0; i < list.length; i++) {
        th += "['" + list[i] + "']";
    }
    eval(`obj${th}='${value}'`)
} 

运行结果

{
   "zhang":{
       name:'张三',
       girlfriend:{
           name:'娑娜',
       }
   }
}