js浅拷贝的方法

function shallowCopy(obj){

    let copyObj={};

    for(let key in obj){

        if(obj.hasOwnProperty(key)){

            copyObj[key] = obj[key];

        }

    }

    return copyObj;

}

/*  Object.assign(son, obj)

     console.log(son);

     son.msg.sum = 20

     console.log(obj); */

common.ajax = function(param) {

    var mergeParam = $.extend({

        timeout : 10000

    } , param , {

        complete : function(response) {

            alert("扩展的!");

            }

        }

    });

    $.ajax(mergeParam);

}