javascript Object assign 方法赋值

var object={ "a": 1, "b": 2 }
var object_assigned = {"a": 10, "b": 20}

•   Object.assign(object_assigned, map_object)
    console.log(object_assigned)
  

  --->

  {
    a:1,
    b:2
  }
  

  ---

•   Object.assign(object_assigned, {"a": 15, "c": 15})
    console.log(object_assigned)
  

  --->

  {
    a:15,
    b:2,
    c:15
  }