Object.assign 合并多个JavaScript的对象

常规用法，以及一些注意事项和说明：

示例

一般按如下方式写

var source1 = {
    m:'front',
    subm:'money_sign',
    action:'init',
};
var source2 = {
   account_id:'afb12',
   mp_id:'3'
}
var obj = Object.assign({}, source1, source2);
console.log(obj); 
// {m: "front", subm: "money_sign", action: "init", account_id: "afb12", mp_id: "3"}

其余用法

Object.assign 是针对Object开发的API，不仅实现简单的多个对象的合并，还可以为对象添加属性、方法等

这里写代码片

function sometest (){ }
      // 方法也是对象
      // 将两个方法添加到类的原型对象上
      // 类的实例会有这两个方法
Object.assign(sometest.prototype,{
     test1(arg1,arg2){
          console.log('this is method one='+arg1);
          console.log('this is method one='+arg2);
     },
     test2(){
         console.log('this is method two');
     }
 });
 sometest.prototype.test1('haode','2')
 sometest.prototype.test2()
 console.log(sometest.prototype)

结果：
this is method one=haode
this is method one=2
this is method two

{test1: , test2: , constructor: }
test1:  test1(arg1, arg2)
test2:  test2()
constructor:  sometest()__proto__: Object
 Object() { [native code] }