前端学习——继承模式

如何实现A继承B,并且再给A添加新的属性时不影响B
最完美的继承方法——圣杯模式

<script>
    function inherit(Target, Origin) {
     
     
      //用F做中间层
      function F() {
     
     };
      F.prototype = Origin.prototype
      //new一个F，这样给son的prototype加东西不会影响到father
      Target.prototype = new F()
      Target.prototype.constructor=Target
      //查看到底继承自谁
      Target.prototype.uber=Origin.prototype
    }
    Father.prototype.lastname = 'abc'
    function Father() {
     
     }
    function Son() {
     
     }
    // 先继承,再new对象
    inherit(Son,Father)
    var son=new Son()
    var father=new Father()
  </script>

<script>
    /*
    function inherit(Target, Origin) {
      //用F做中间层
      function F() {};
      F.prototype = Origin.prototype
      //new一个F，这样给son的prototype加东西不会影响到father
      Target.prototype = new F()
      Target.prototype.constructor=Target
      //查看到底继承自谁
      Target.prototype.uber=Origin.prototype
    }*/
    //另一种写法（推荐这种）
    var inherit=(function(){
     
     
      var F=function(){
     
     };
      return function(Target,Origin){
     
     
        F.prototype=Origin.prototype;
        Target.prototype=new F()
        Target.prototype.constructor=Target;
        Target.prototype.uber=Origin.prototype
      }
    }())
    Father.prototype.lastname = 'abc'
    function Father() {
     
     }
    function Son() {
     
     }
    // 先继承,再new对象
    inherit(Son,Father)
    var son=new Son()
    var father=new Father()
  </script>