参考1:https://www.jianshu.com/p/80ea0d1c04f8
参考2:
var arr1=[1,2,3];
var arr2=[4,5,6];
arr1.push.apply(arr2,arr2); //把arr1改成了arr2
alert(arr2)//4,5,6,4,5,6
alert(arr2)//4,5,
function Person(name,age,salary){
this.name=name;
this.age=age;
this.salery=salary;
}
function f1(person){
person.name="ls";
person=new Person("aa",18,10);//new了一个新的空间, p.name和person.name分别为’ls’和’aa’
}
var p=new Person("zs",9,5);
console.log(p)// Person {name: "zs", age: 9, salery: 5}
f1(p)
console.log(p)// {name: "ls", age: 9, salery: 5}
<ul>
<li is='my-component'></li>
</ul>
<ul>
<my-component></my-component>
</ul>