js對象通過屬性路徑擷取屬性值 - getPropByPath

標籤：屬性   return   path   ace   ems   error   erro   items   console   

function getPropByPath(obj, path) {        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) {            let key = keyArr[i];            if (key in tempObj) {                tempObj = tempObj[key];            } else {                throw new Error(‘[iView warn]: please transfer a valid prop path to form item!‘);            }        }        return {            o: tempObj,            k: keyArr[i],            v: tempObj[keyArr[i]]        };    }

如： var obj = {name:‘objname‘, items:[{value: 0},{value: 1}]}, path = ‘items.0.value‘;

　　 console.log( getPropByPath(obj, path).v );

結果： 0

js對象通過屬性路徑擷取屬性值 - getPropByPath