获取对象指定路径的值

?

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27

function getPropByPath(obj,path,strict){        let tempObj=obj;     path=path.replace(/\[(\w+)\]/g,'.$1');     path=path.replace(/^\./,'')     let keyArr=path.split('.')     let i=0;     for(let len=keyArr.length;i<len-1;++i){         if(!tempObj&&!strict)break;         let key=keyArr[i]         if(key in tempObj){             tempObj=tempObj[key]         }else{             if(strict){                 throw new Error('please transfer a valid prop path to form item!')             }             break;         }       }     return {         o:tempObj,         k:keyArr[i],         v:tempObj?tempObj[keyArr[i]]:null     } } let obj={name:{cc:{bb:1}}} console.log(getPropByPath(obj,'name.cc.bb'));