js对象通过属性路径获取属性值 - getPropByPath - JavaScript

提示：扫一扫查出行
【扫一扫了解最新限行尾号】
复制提示

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]]

        };

    }