Implementation of JavaScript object-oriented inheritance

1<script type="Text/javascript">2 function Animal () {3       This. species="Animal";4  }5 function Cat (name,color) {6      This. name=name;7      This. color=color;8 }9 //apply assigns the constructor of the parent class object to the subclass, Animal.apply (this,arguments);Ten function Cat (name,color) { One       This. name=name; A       This. color=color; -Animal.apply ( This, arguments); -  } the  varcat1=NewCat ("Mao","Yellow"); - alert (cat1.species); -  - //Prototype Sub-object prototype Prototype assigns the parent class object and assigns the constructor of the subclass object prototype to the child class +Cat.prototype =NewAnimal (); -Cat.prototype.constructor=Cat; + varcat1=NewCat ("Mao","Yellow"); A alert (cat1.species); at</script>

Implementation of JavaScript object-oriented inheritance