javascript_call1实现的继承 

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN"
   "http://www.w3.org/TR/html4/strict.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" lang="en">
<head>
	<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
	<title>js01_hello</title>
	<meta name="author" content="Administrator" />
	<script type="text/javascript">
	function Parent() {
		this.color = ["red","blue"];
		this.name = "Leon";
	}
	
	function Child() {
		//在Child中的this明显应该是指向Child的对象
		//当调用Parent方法的时候，而且this又是指向了Child
		//此时就等于在这里完成this.color = ["red","blue"]
		//也就等于在Child中有了this.color属性，这样也就变相的完成了继承
		Parent.call(this);
		//这种调用方式，就仅仅完成了函数的调用，根本无法实现继承
		//Parent();
	}
	
	
	var c1 = new Child();
	c1.color.push("green");
	alert(c1.color);
	var c2 = new Child();
	alert(c2.color);
	alert(c2.name);
	</script>
</head>
<body>
</body>
</html>

　　

posted on 2015-02-10 15:48  aicpcode  阅读(191)  评论(0)    收藏  举报

导航