对象内动态属性名的值获取

// path
form.list.0.title


/**

*

* @param {String} obj

* @param {String} path

* @param {Number} nums

*/

$_setLimit: function(obj, path, nums) {

let temObj = obj;

let keyArr = path.split(".");

let val = keyArr.reduce((cur, next) => {

return cur[next];

}, this[temObj]);

}